Globular proteins are not present in the membrane.
What is the composition/structure of a cell membrane?The fluid mosaic model, which is the presently accepted explanation for the composition of the plasma membrane, was originally put forth in 1972. The plasma membrane is a mosaic of elements, primarily phospholipids, cholesterol, and proteins, that move fluidly and freely in the plane of the membrane, according to the fluid mosaic model.
Lipids (such as phospholipids and cholesterol), proteins, and carbohydrate groups that are joined to some of the lipids and proteins make up the plasma membrane.
A phospholipid is a lipid composed of glycerol, two fatty acid tails, and a head group that is phosphate-linked. Phospholipid bilayers, two layers of phospholipids with their tails pointing inward, are a common component of biological membranes.In the center of the membrane, next to phospholipids, is cholesterol, a different lipid made up of four fused carbon rings.Membrane proteins can enter the plasma membrane only partially, cross it totally, or remain loosely connected to either the inside or outside face of the membrane.The outer layer of the plasma membrane contains carbohydrate groups, which are joined to lipids or proteins to form glycolipids or glycoproteins.Learn more about plasma membrane here:
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Match the organism to the infection: Group of answer choices Streptococcus pyogenes [ Choose ] Varicella zoster [ Choose ] Papillomavirus [ Choose ] Enterococcus faecium [ Choose ] Borrelia burgdorferi [ Choose ] Bordetella pertussis
S. pyogenes causes Strep throat, Varicella zoster causes varicella, Papillomavirus causes HPV, E. faecium cause urinary tract infection B. burgdorferi causes Lyme disease and B. pertussis causes Pertussis.
What is Bordetella pertussis?Bordetella pertussis is a bacteria from the genus Bordetella that causes a respiratory disease known as Pertussis.
Moreover, Bordetella burgdorferi is another bacteria from genus Bordetella that causes Lyme disease, an illness whose symptoms include fever and fatigue.
In conclusion, Streptococcus pyogenes causes Strep throat, Varicella zoster causes varicella, Papillomavirus causes HPV, Enterococcus faecium cause urinary tract infection Borrelia burgdorferi causes Lyme disease and Bordetella pertussis causes Pertussis.
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The middle pleistocene and the late pleistocene correspond to which cultural periods?
The middle stone age and the later stone age corresponds to the middle and the late pleistocene.
Cultural evolution during the middle and the late pleistocene :-
In southwestern Asia as well as northern and southern Africa, personal ornaments in the form of perforated seashells are recorded from the early Late Pleistocene. In the Old World, Neanderthals and anatomically modern humans are linked to a range of personal ornamentation by about 40,000 years ago (Ka). These include fully created ornaments as well as organically modified things. The appearance of figurative art, mythical imagery, and other types of items, like as musical instruments, at various times in history suggest that completely modern behavior began to emerge more gradually towards the middle of the Late Pleistocene and most definitely no later than 40 Ka. Many, but not all, of the lengthy and rigorous history of study might well have helped to the relevant data come from Europe.
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The bone marrow begins producing cells in the _____________ month of fetal life.
The bone marrow begins producing cells in the fourth month of fetal life.
Hematopoiesis establishes in the marrow and grows there until, at term. This process starts in the late first trimester when the bones are large enough to contain marrow cavities. Hematopoiesis can move outside of the bone marrow to various organs under conditions of prenatal and neonatal stress.
Between the bone spicules are the hematopoietic components. Both sinusoids and a robust circulatory network are present in the marrow. Pluripotent stem cells are the progenitor cells that give rise to all hematopoietic components and lymphoid cells.
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Each cell in an individual's body carries certain molecules that tell the body they belong to that individual. those molecules are called ________.
Answer:
MHC Markers
Explanation:
The function of MHC molecules is to display peptide fragments derived from pathogens on the cell surface for recognition by the appropriate T cells.
________is when the kidneys produce too much hydrogen or retain too much hydrogen which leads to an increase in carbonic acid production. Or the kidneys excrete too much base
Metabolic acidosis is when the kidneys produce too much hydrogen or retain too much hydrogen which leads to an increase in carbonic acid production. Or the kidneys excrete too much base.
What is metabolic acidosis?The primary function of the kidney is to purge toxins from the blood and convert waste products into urine. Around 160 grams of weight and one to one and a half litres of urine are excreted daily by each kidney.When the kidneys do not properly eliminate acids from the blood into the urine, renal tubular acidosis (RTA) ensues. The result is an excessively high blood acid level, or acidosis. While having some blood acid is natural, having too much acid can cause numerous biological functions to become unbalanced.When there is too much acid in the body's fluids, it is called acidosis.When your kidneys and lungs are unable to maintain a healthy pH level in your body, acidosis results. Acid is created by numerous bodily activities.Learn more about kidney here:
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when it comes to your natural positive/negative ratio when ineracting with students, long term patterns mattermore than single interactions
when it comes to your natural positive/negative ratio when interacting with students, long-term patterns matter more than single interactions
The proportion of positive to negative encounters that is "magic." The prevalent notion that there is a "magic" ratio of positive-to-negative contacts for enhancing interpersonal relationships is shown by Flora's position. In the subject of education, it is frequently advised that teachers keep a particular balance between their positive and negative interactions with students.
Although this rule has strong face validity, no particular ratio has any empirical backing. The writers argue against the usage of any particular ratio but are in favor of maintaining a high positive to negative ratio. They cover topics such as the evolution of recommendations for the positive-to-negative interaction ratio and an overview of pertinent studies on pupils with emotional or behavioral disorders (EBD).
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After a short, high-level exposure to a toxicant, you immediately feel dizzy and nauseous. you are likely showing symptoms of:______
Blood pressure drops excessive they sit or stand up which condition called or postural hypo-tension.Orthostatic hypotension which is also called postural hypotenmnsion.
Orthoostatic hypotension caan caused dizziness or lightheadedness hypotension which is a form of low blood pressure that can happens when standing after sitting or lying down.But in some cases people with high blood pressure may have a pounding feeling in their head or cheat a feeling of lightheartedness.
Dizziness and nausea people feeling lightheaded enough to faint or notice cold, clammy skin, blurry vision, or chest pain.Dizziness or light headedness when standing occurs in about 20% of old people.
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Because extremophiles are hard to culture outside of their native environments, how do scientists classify and identify specific species?.
They use DNA sequencing to identify species via genetic differences.
What is the significance of DNA sequencing?
The four chemical "bases" that make up the DNA molecule must be identified in the correct order in order to sequence DNA. The sequence provides information to scientists about the type of genetic data that is contained in a certain DNA segment.
For instance, scientists can utilize sequence data to identify the DNA segments that contain genes and the segments that carry regulatory instructions that switch genes on and off. Furthermore, and this is crucial, sequencing data might point out variations in a gene that might be harmful.
Large DNA lengths, 1 million bases or more, from various individuals can now be compared swiftly and affordably by researchers. Such comparisons can reveal a wealth of information regarding how inheritance affects illness susceptibility and how the body reacts to environmental factors. The potential for diagnostics and treatments is also greatly increased by the faster and more affordable genome sequencing.
The biology of development and evolution can also be better understood by comparing the genomic sequences of other animals and species, like yeast and chimpanzees.
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he saw happiness as an important human goal and is known to have introduced the science of happiness
Aristotle
According to Aristotle "Happiness is the meaning and purpose of life, the whole aim and end of human existence"
What is Happiness ?Happiness is a life that is being well led through virtue, living well and acting well.
Happiness depends on ourselves.” More than anybody else, Aristotle enshrines happiness as a central purpose of human life and a goal in itself. Aristotle tells us that the most important factor in the effort to achieve happiness is to have a good moral character — what he calls “complete virtue.”But being virtuous is not a passive state: one must act in accordance with virtue.Learn more about Happiness here:
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What is the norm of reaction? Multiple choice question. The combination of tissues and organs that are affected by a pleiotropic mutation The phenotypic range displayed by individuals with a particular genotype under different environmental conditions The ability of a single wild-type allele to produce enough protein to confer a wild-type phenotype in a heterozygote
The norm of reaction refers to the phenotypic range displayed by individuals with a particular genotype under different environmental conditions.
Norm of Reaction
The norm of reaction or the reaction norm refers to the range of phenotypes exhibited by a genotype in varying environmental conditions. The norm of reaction assesses the environmental variation and its contribution to producing the phenotypic variation that may occur in the same or related species.
Phenotypes and Environment
The production of a phenotype depends on the genotype and the interaction of the same with the environment. The norm of reaction often represents the limit of phenotypic variations possible for a genotype in an environment. The interaction of genotype and environment was described by Richard Woltereck. Such interactions occur in many dimensions and multiple levels of development.
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Using an example, describe how each of the five levels of organization relates to the next level of organization
An example of how the five levels of organization relates with one another is as follows: hepatic cell forms hepatic tissues, which forms liver, which makes up the digestive system.
What is the level of organization in biology?A reductionistic biological organization known as level of organization involves a hierarchy of intricate biological processes and structures that characterize life.
The level of organization of life are arranged hierarchically from simplest to the most complex as follows;
Cell; the simplest chamber in a tissue or organism that possess specific functionsTissue; a group of cells similar in origin that function together to do a specific jobOrgan; a group of tissues performing similar functionOrgan system; a group of organs performing similar functionOrganismHere is an illustration of how the five organizational levels relate to one another: The digestive system is made up of the liver, which is made of hepatic cells.
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You have stumbled on a new species of fly (order Diptera), and being a geneticist, you have already deritifled a few genes and observed an unusual phenotypic inheritance pattern. You have noticed that some flies have wings pointing forward and other flies have wings pointing backward. Digging in a bit deeper, you discover that the gene wing direction will controls which direction the wings point, and that if you cross homozygous backward-wing mother (wdir wall with a homozygous forward-wing father (wdir wer), all of the offspring (wdir wdin) have backward wings. When you perform the reciprocal cross, a homozygous forward-wing mother (wdi wdld with a homozygous backward-wing father (wdir wald, you observe that all of the offspring (wair wdir) have forward-facing wings. How would you account for this bizarre genotype phenotype relationship? a. Wing direction exhibits codominance where both phenotypes are represented equally b. The wdr gene is pleiotropic and affects multiple characteristics of the offspring causing the strange genotype phenotype relationship c. Wing direction is affected by something in the environment and is therefore an epgenetic trail Only the matemal gene for wing direction is being expressed due to genomic imprinting that silences the paternal gene during gamete formation d. Wing direction is obeying Mendes tws of independent assortment and segregation, therefore there is a 50/50 chance that wings will taco forward or backward in each offspring
Genomic imprint is the inactivation or silencing of one allele while the other one is still expressed. Option D). Only the maternal gene for wing direction is being expressed due to genomic imprinting.
What is the genomic imprint?Genomic imprint or allele inactivation is the process through which one of the alleles of a gene (the one coming from the mother or the father) is suppressed, and only the other allele can be expressed.
This is not a mutation but a silencing effect due to other external factors. The unequal functional paternal and maternal genomes characterize the Genomic imprint pattern.
In the exposed example, Males' chromosomes are inactive or imprinted and have a different function from those females' chromosomes.
This is a common pattern in some mammals, insects, and angiosperms. The paternal allele can not be expressed, which causes an unequal contribution to the phenotype of the progeny.
Available data:
Diallelic Gene: Wdir ⇒ controls the direction of the wingwdir wdir ⇒ backwardwdir-wdir- ⇒ forwardwdir wdir- ⇒ backward or forward1st cross:
Parentals) wdir wdir female (backward) x wdir- wdir- male (forward)
F1) 100% wdir wdir- (backward)
2nd cross:
Parentals) wdir wdir male (backward) x wdir- wdir- female (forward)
F1) 100% wdir wdir- (forward)
In both cases, the offspring is heterozygous for the trait but expresses the female's phenotype.
Only the maternal gene for wing direction is being expressed due to genomic imprinting that silences the paternal gene during gamete formation. Option D) is correct.
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You have stumbled on a new species of fly (order Diptera), and being a geneticist, you have already deritifled a few genes and observed an unusual phenotypic inheritance pattern.
You have noticed that some flies have wings pointing forward and other flies have wings pointing backward. Digging in a bit deeper, you discover that the gene wing direction (Wdir) will controls which direction the wings point, and that
if you cross homozygous backward-wing mother (wdir wdir) with a homozygous forward-wing father (wdir- wdir-), all of the offspring (wdir wdir-) have backward wings. if you perform the reciprocal cross, a homozygous forward-wing mother (wdir- wdir-) with a homozygous backward-wing father (wdir wdir), you observe that all of the offspring (wdir wdir-) have forward-facing wings.How would you account for this bizarre genotype phenotype relationship?
Multiple Choice
a) Wing direction exhibits codominance where both phenotypes are represented equally
b) The wdir gene is pleiotropic and affects multiple characteristics of the offspring causing the strange genotype phenotype relationship
c) Wings direction is affected by something in the environment and is therefore an epgenetic trail
d) Only the maternal gene for wing direction is being expressed due to genomic imprinting that silences the paternal gene during gamete formation
e) Wing direction is obeying Mendes tws of independent assortment and segregation, therefore there is a 50/50 chance that wings will taco forward or backward in each offspring.
What is the purpose of obtaining a 12-lead ecg early during the post-cardiac arrest?
During cardiac arrest the AHA direct healthcare providers obtain 12-leads ECG immediately after the return of spontaneous circulation to identify those patients with ST- segment myocardial infarction or new or presumably new bundle branch block.
12-leas electrocardiography use which perform to diagnose ST-segment elevation myocardial infarction. It is a medical test that recorded using leads or nodes which attached to the body. Vasopressin should be effective in patients of cardiac arrest after the treatment.
ECGs captured the electrical activity of heart and transfer it to graphed paper. Use to diagnose cardiovascular disease ,acute myocardial infarction in clinics and hospital based practice.
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which of the following abiotic factors can cause harmful effects such as acid rain when too much is releadein to the atmosphere
Abiotic factors can cause harmful effects such as acid rain when too much is releadein to the atmosphere are Carbon, and Sulfur.
Acid rain
Acid deposition, often known as acid rain, is a general name for any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, which falls to the ground from the atmosphere in wet or dry forms. This can apply to rain, snow, fog, hail, and even corrosive dust. Sulfur dioxide (SO2) and nitrogen oxides (NOX) that are released into the atmosphere and carried by air currents and wind result in acid rain. Water, oxygen, and other molecules react with the SO2 and NOX to generate sulfuric and nitric acids. While some of the SO2 and NOX that create acid rain come from natural sources like volcanoes, the majority of it is produced by burning fossil fuels.
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A group of biology students test the growth of bacteria under different conditions. the students apply the same amount of bacteria to identical petri dishes enriched with nutrients, then place each plate at a different temperature. the bacteria are allowed to grow for three days after which the number of bacterial colonies on each plate is counted. what is the dependent variable in this experiment?
I will leave your question unanswered. Thanks for the points I stole from you!
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Explanation:
después te ayudo
What is the stage of cell division in a diploid organism if you see seven chromosomes, each consisting of a pair of sister chromatids
Answer:
Metaphase is the stage of cell division in a diploid organism if we see seven chromosomes, each consisting of a pair of sister chromatids.
Hope its helpful!
Meiosis II prophase is the stage of cell division in a diploid organism, each consisting of a pair of sister chromatids
There are four crucial processes that take place during prophase II of meiosis II. These include chromatin condensation into chromosomes, thinning of the nuclear envelope, centrosome movement to either pole and re-building of the spindle apparatus. Centrosomes do not exist in every cell, though.
Both of the daughter cells that were created during meiosis I go through meiosis II. The process of cell division starts right away because DNA replication does not occur during this second meiotic stage. Prophase II sets up the cell for meiosis II, which results in the production of four haploid cells, each of which has half the genetic material that was previously present in the original, duplicated diploid cell.
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in meiosis prophase 1 why excahnge of genetic information is important?
The exchange of genetic information leads to genetic diversity.
What is genetic diversity?It refers to the number of unique genes present in the genome of organisms.
The more the number of unique genes an organism has, the more the chances of surviving unfavorable changes to the environment.
Crossing over, the exchange of genes, increases the number of unique genes that a cell will have. Thus, it helps increase genetic diversity and chances of survival in the environment.
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If more water is entering a human red blood cell than exiting it, then the cell is surrounded by a(n) ______ solution
If more water is entering a human red blood cell than exiting it, then the cell is surrounded by a hypotonic solution.
What is a hypotonic solution?A hypotonic solution can be defined as any solution or media where the content of solute (eg., glucose molecules, saccharose, etc) is lower than the solute concentration in the cell.
Conversely, a hypertonic solution can be defined as any solution or media where the content of solute is higher than the solute concentration in the cell.
In conclusion, if more water is entering a human red blood cell than exiting it, then the cell is surrounded by a hypotonic solution.
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Which of these is a drawback of hydraulic fracturing?
A. Higher risk of mine shaft collapse
B. Higher risk of acid rain damage
C. Higher risk of earthquakes
D. Higher risk of oil spills
ITS C.
Answer:
C
Explanation:
What feature would easily distinguish schist and gneiss from quartzite and marble?
Foliation is much better developed in most schists and gneiss than in most quartzites and marbles.
The major contrast between schist and gneiss is that schist is made of mudstone or shale, whereas gneiss is made of micas, chlorite, or other platy minerals. While Marble and quartzite the major difference is that marble is composed of calcite whereas quartzite is composed of quartz.
Schist is identified by its flat and large sheet-like grains it also has flat and elongated minerals such as talc or micas. Gneiss is a metamorphic rock formed by changing schist, granite, or volcanic rocks through intense heat and pressure. Gneiss is foliated, which means that it has layers of lighter and darker minerals.
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i need help with this in bio
Answer:B
Explanation:Codominance, as it relates to genetics, refers to a type of inheritance in which two versions of the same gene are expressed separately to yield different traits in an individual.
Which is true about the elongation of the leading strand during DNA synthesis?
The elongation of the leading strand during DNA synthesis depends on DNA polymerase: option A.
What is DNA synthesis?DNA synthesis is the process by which new DNA is made from template DNA.
During DNA synthesis, the enzyme DNA polymerase adds new nucleotides to the leading DNA strand from the 3" end.
Note that the complete question is as follows:
Which is true about the elongation of the leading strand during DNA synthesis?
a. it depends on the dna polymerase actionb. it produces rna fragmentsc. it does not require a template strandIn conclusion, the elongation of the leading strand during DNA synthesis involves attachment of nucleotides at the 3" end.
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Humans infected with Brucella species develop ________ characterized by fever, chills, sweating, muscle aches, and headache.
According to the research, humans infected with Brucella species develop brucellosis characterized by fever, muscle aches, and headache.
What is brucellosis?It is a bacterial and infectious disease caused by bacteria of the brucella genus whose reservoir of this bacterium are animals and, mainly, cows, sheep, goats and pigs.
The most frequent is the appearance of general symptoms, among which fever, chills, muscle aches, among others, predominate.
Therefore, we can conclude that according to the research, humans infected with Brucella species develop brucellosis characterized by fever, muscle aches, and headache.
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Identify each of the cell types listed that are associated with the alveoli of the lungs.
The cell types that are associated with the alveoli of the lungs are Type 1 pneumocytes, Type 2 pneumocytes and Alveolar macrophages.
Which type of cells present in alveolus?Each alveolus has three types of cell i.e. Type 1 pneumocytes, Type 2 pneumocytes and macrophages. These cells perform function of respiration in the lungs.
So we can conclude that the cell types that are associated with the alveoli of the lungs are Type 1 pneumocytes, Type 2 pneumocytes and Alveolar macrophages.
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Consider the table below that summarizes the types of materials that can block the 3 different types of radiation.
Material
1
2
3
Lead Stopped Stopped Stopped
Cloth Not stopped Stopped Stopped
Aluminum foil Not stopped Stopped Stopped
Wood Not stopped Stopped Stopped
Paper Not stopped Stopped Not stopped
Thick concrete Stopped Stopped Stopped
Based on the table, at which numbered spot in the table does each type of radiation belong?
1 = beta; 2 = alpha, 3 = gamma
1 = alpha; 2 = beta, 3 = gamma
1 = beta; 2 = gamma, 3 = alpha
From the table, we can see that; 1 = beta; 2 = alpha, 3 = gamma. Option A
What is radiation?Radiation is a form of energy that can not be seen. We know that beta radiation can be stopped by such things as a piece of cloth while alpha particles can be stopped by an aluminums foil. Also, gamma rays can only be stopped by thick concrete or lead.
Hence; we can conclude that; 1 = beta; 2 = alpha, 3 = gamma. Option A.
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The location of an allele on a homologous chromosome is the same, but the allele information may be _______.
The location of an allele on a homologous chromosome is the same, but the allele information may be different
For genes with the same corresponding loci, homologous chromosomes are made up of chromosome pairs that are roughly the same length, centromere position, and staining pattern. The organism inherits one homologous chromosome from its mother and the other from its father.
The same genes are found in the same places all along the length of homologous chromosomes, which are paired together. A diploid organism has a full set of chromosomes since each homologous chromosome is inherited in one copy from each parent. A homologous set of chromosomes are identical in size and form and are highly similar to one another.
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The innate ability of cells to self-destruct is a part of physiological processes known as Group of answer choices the unified theory of aging. a free radical response. programmed cell death. the coenzyme restriction model.
The innate ability of cells to self-destruct is a part of a physiological process known as programmed cell death.
Programmed cell death (PCD) is the destruction of a cell caused by intracellular processes, such as apoptosis or autophagy. PCD is carried out through a biological mechanism, which often confers advantage during the lifecycle of an organism. For instance, the differentiating of fingers and toes in a growing human embryo is caused by the apoptosis of cells between the fingers, resulting in the separation of the digits. PCD fulfils key tasks during the development of plant and animal tissues. Necrosis is the death of a cell triggered by external forces, such as trauma or infection, and it manifests in various ways.
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The evolutionary perspective's emphasis on adaptation recalls the focus of the school of structuralism.
The statement 'the evolutionary perspective's emphasis on adaptation recalls the focus of the school of structuralism' is TRUE.
What is the evolutionary perspective?The evolutionary perspective makes reference to a theoretical framework in which the tree of life can be encompassed by common origin criteria.
In a similar way, structuralism examines human cognitive features in a single framework based on behavioral features and human cultural contexts.
In conclusion, the statement 'the evolutionary perspective's emphasis on adaptation recalls the focus of the school of structuralism' is TRUE.
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Red-green colorblindness is an X-linked recessive trait in humans. A colorblind woman and a man with normal vision have a son. What is the probability that the son is colorblind
There is a 50% probability that the son is red-green colorblind and 50% chance that the sons do not have the gene and will be healthy. There is a 50% chance that a son will inherit the gene and show the trait or disorder.
Red-green colorblindness is an X-linked recessive trait in humans and in this a person cannot distinguish between red and green color but their eye sight is normal. However, males are affected more than females, because the gene is present on the X chromosome. So there is a 50% chance that the son is colorblind. Males are affected more than females because the gene is located on the X chromosome.
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A lateral cervical vertebral projection demonstrating the right and left articular pillars and zygapophyseal joints with superoinferior separation, the inferior cortices of the cranium and mandible without superimposition, and the vertebral foramen of C1 visualized was obtained with the:
The said lateral cervical vertebral projection was obtained with the head and upper cervical vertebrae tilted toward the IR.
What are the parts of cervical vertebrae?The cervical vertebrae serve as the origination and insertion points for muscles that support and enable movement of the head and neck.The cervical spine has 7 stacked bones called vertebrae, labeled C1 through C7. The top of the cervical spine connects to the skull, and the bottom connects to the upper back at about shoulder level. The superior and inferior articular processes of cervical vertebrae have fused on either or both sides to form articular pillars.A lateral cervical projection with accurate positioning is as follows: C1 & C2 without cranial or mandibular superimposition, open intervertebral disk spaces, superimposed right & left articular pillars & zygapophyseal joints, the spinous process in profile.Learn more about cervical vertebrae here:
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