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In humans, as well as in many other animals and some plants, the sex of the individual is determined by sex chromosomes. The sex chromosomes are one pair of non-homologous chromosomes: XX represents a female, while XY represents a male. When a gene for a specific trait is attached to the X or Y chromosome, we say it is sex-linked, and when it is attached to the X chromosome, we say it is X-linked. Alleles for these linked traits, such as hemophilia or color blindness, crosses, may be recessive or dominant.
Hemophilia is an X-linked, recessive trait. The recessive allele for hemophilia is actually a mutated version of the normal alllele but it can still be passed on through generations. Imagine a female is a carrier for hemophilia; her genotype is XHXh. She is married to a man who does not have hemophilia. What conclusion is NOT valid concerning this genetic cross?
A) 0% of female offspring will have hemophilia.
B) 100% of the male offspring will have hemophilia.
C) There is a 50% chance that male offspring will have hemophilia.
D) The chance that female offspring will have the allele for hemophilia is 50%.
Answers
Answer:
B isn't valid
Explanation:
As you observe from the diagram above, the second offspring (a male) doesn't have haemophilia disproving option B
Related Questions
The cells that make up our body are known as
(1 Point)
a. Sex cells
O b. Germ cells
O c. Prokaryotic cells
O d. Somatic cells
Answers
I hope this helps!
T/F Plant cells form a cell plate between the two new nuclei during cytokinesis.
A. True
B. False
Answers
Answer:
false
Explanation:
What is the process when plates move apart from each other?
Group of answer choices
convergent plate boundaries
divergent plate boundaries
transform plate boundaries
subducting plate boundaries
Answers
Answer:
divergent boundaries is the correct answer
DNA sequence AAT GTA CTG CAG C what is the new RNA sequence?
Answers
Answer:
UUA CAU GAC GUC G
What is the answer for this plz????
Answers
Answer:
Alkali metals are any of the elements found in Group IA of the periodic table (the first column). Alkali metals are very reactive chemical species that readily lose their one valence electron to form ionic compounds with nonmetals. All elements in the alkali metal group occur in nature.
Explanation:
Answer:
alkali metals are the most reactive metals found on group 1A on the periodic table
Explanation:
lithium
u. Bacteriophages are viruses that infect a. horses c. mammals b. bacteria d. fungi
Answers
Which cell structure is correctly matched with its function?
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The following organelle is correctly matched with its function: d) Golgi bodies: packaging. The nucleus is the part of the cell that is in charge of heredity, the ER helps with protein synthesis, and mitochondria releases energy from molecules.
plz mark brainliest
In order to analyze DNA found at the crime scene it has to be extracted from the cells.
Answers
Answer:
yes
Explanation:
Answer: In an instance where the crime scene offers a clear source of DNA (blood, urine, saliva, and samples on steering wheels, etc.), the sample can be collected using a swab. After putting on protective gloves, remove the swab from its wrapper, taking precautions to touch only the handle
Analyze the map below and answer the question that follows.
2041-09-01-01-00_files/i
Image courtesy of NASA
Which of New Zealand’s physical features is circled by number 3 on the map above?
A.
the Northern Peninsula
B.
the Southern Alps
C.
the Canterbury Plains
D.
the Eastern Hills
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer: Ur answer is B ...............................
B i think
sorry if im wrong:(
DUE AT MIDNIGHT!!!! HELP
What is one way that calcitonin and parathyroid hormone maintain homeostasis?
A. Calcitonin stimulates the kidneys to excrete calcium when calcium levels are too high, while parathyroid hormone stimulates the kidneys to absorb calcium when calcium levels are too low.
B. Calcitonin stimulates the bones to excrete calcium when calcium levels are too high, while parathyroid hormone stimulates the bones to absorb calcium when calcium levels are too low.
C. Calcitonin stimulates the kidneys to absorb calcium when calcium levels are too low, while parathyroid hormone stimulates the kidneys to excrete calcium when calcium levels are too high.
D. Calcitonin stimulates the bones to absorb calcium when calcium levels are too low, while parathyroid hormone stimulates the bones to excrete calcium when calcium levels are too high.
Answers
Answer:
The way calcitonin and parathyroid hormone maintain homeostasis in the body is calcitonin stimulates the kidneys to excrete calcium when calcium levels are too high, while parathyroid hormone stimulates the kidneys to absorb calcium when calcium levels are too low (option A).
Explanation:
Calcitonin and parathyroid hormone have a role in maintaining the balance of calcium and phosphorus concentrations, but their effects are opposite.
The reduction of calcium levels promoted by calcitonin is based on:
Inhibition of intestinal absorption of calcium and bone resorption or decalcification. Increases the excretion of Calcium by the kidneys.On the other hand, parathyroid hormone increases calcium levels by performing the opposite effect of calcitonin:
It stimulates intestinal absorption and bone resorption. It increases renal calcium reabsorption.Both mechanisms contribute to maintain the levels of calcium, when it is high or low in the organism, collaborating with the maintenance of the homeostasis.
The other options are not acceptable because they do not describe the correct function of calcitonin and parathyroid hormone.
the process of dna to rna is called
Answers
Answer:
hiii
Explanation:
The process by which DNA is copied to RNA is called transcription, and that by which RNA is used to produce proteins is called translation. DNA replication Each time a cell divides, each of its double strands of DNA splits into two single strands.
hope it helps you out please mark as BRAINLIEST AND FOLLOW ME PROMISE YOU TO FOLLOW BACK ON BRAINLY.IN
Answer:
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). Together, the transcription factors and RNA polymerase form a complex called the transcription initiation complex.
Explanation:
Because its in our bodies.
what is the summary equation of respiration
Answers
Please mark me brainliest:)
Why does the ocean contain more heat energy than a pot of boiling water?
A
because the ocean has many more molecules than a pot of water
B
because ocean water has a higher temperature than boiling water
C
because the salt in the ocean causes ocean water to hold on to more heat
D
because molecules of ocean water moves more slowly than those of boiling water
Answers
Answer:
A.bevause the ocean had more molecule than a pot of water.
The bond in table salt (NaCl) is Select one : O A. polar O Bionic O C. covalent O nonpolar
Answers
Answer:
A
Explanation:
NaCl posseses a polar ionic bond
However if your option B is actually "ionic" not "bionic", the answer is B
I NEED THIS ANSWER Transcribe and Translate this DNA sequence:
TAC GAG TTG CCG TAT ATT GCG CTC GAC TGC
Answers
Answer:
Given the sequence of DNA bases sequence:
DNA TAC GAG TTG CCG TAT ATT GCG CTC GAC TGCTranscription into mRNA and translation would be:
mRNA AUG CUC AAC GGC AUA UAACGC GAG CUG ACG Amino acids Met (Start)-Leu-Asn-Gly-Ile-Stop-Arg-Glu-Leu-ThrExplanation:
Genetic information is found in DNA, and this information depends on a sequence of bases —adenine, thymine, cytosine and guanine— in the DNA molecule.
Transcription consists of creating a strand of mRNA, from the sequence of bases in a DNA strand, which it assumes:
The sequence of RNA is complementary to the DNA sequence that forms it, following the complementarity of bases. In RNA there is no base thymine, which is replaced by uracil.The sequence of mRNA is organized into triplets or codons, each of which encodes for the synthesis of an amino acid (translation), indicating both the start of a polypeptide chain and the stop of protein synthesis. Knowing this information, it can be stated that, following a sequence of DNA bases, the resulting transcription and translation would be:
DNA TAC GAG TTG CCG TAT ATT GCG CTC GAC TGC Transcription AUG CUC AAC GGC AUA UAACGC GAG CUG ACG Translation Met (Start)-Leu-Asn-Gly-Ile-Stop-Arg-Glu-Leu-ThrResulting amino acids and indications in protein synthesis Methionine (inicio), Leucine, Asparagine, Glycine, Isoleucine —Stop— Arginine, Glutamine, Leucine and Tyrosine.
Define the word ubiquitous and provide examples showing why this is an appropriate term to use while describing microbes
Answers
Answer:
They are found everywhere on the planet. Microbes are the most abundant organisms found in every region and environment on Earth.
Explanation:
Ubiquitous means present or found everywhere. Microbes, are the most abundant organisms on Earth, also called microorganisms. There are several types of microbes, usually classed as protists, protozoa, algae, bacteria, viruses, and fungi.
As integral parts of our ecosystems, they are essential in their roles as producers, consumers, and decomposers and are capable of inhabiting a wide range of climates and niches- from the hottest volcanoes, icy tundras to the deepest regions of the ocean. Microbes are also essential to macro-organisms; in humans, they aid in the digestion of food and maintain gut health. Additionally, microbes can be used in the production of food, medicine, fuel, and other biotechnological applications.
Based on the internal and external solute concentrations, do you think the paramecium will swell up or shrink in this solution? Explain your reasoning.
Answers
Answer:
Depending on the external and internal solute concentrations, the paramecium will either, shrink, remain the same size or swell.
If the external solute concentration is less than internal solute concentration, the paramecium will swell.
If the external solute concentration is equal to the internal solute concentration, the paramecium will remain the same in size.
If the external solute concentration is greater than the internal solute concentration, the paramecium will shrink.
Note: The concentrations of the external and internal environments were not given.
Explanation:
When two compartments containing solutions are separated by a semipermeable membrane, by means of osmosis, water can move in or out of a compartment depending on the concentration of solutes in either compartments.
In a cell such as a paramecium, the cell membrane serves as a semipermeable membrane.
If the concentration of solutes in both the internal and external environment are the same, there is no net movement of water molecules, and the solutions are said to be isotonic.
If the concentration of solutes in the external environment is greater than the internal environment, water molecules moves out from the internal to external environment, and the paramecium shrinks in size.
If the concentration of solutes in the external environment is less than the internal environment, water molecules moves from the external into the internal environment, and the paramecium swells up in size.
Where does anaerobic respiration occur in the cell?
Mitochondria
Cytoplasm
Cell membrane
Nucleus
Answers
Answer:
cytoplasm
Explanation:
Which nucleic acid is pictured on the right? Justify
Answers
- Uracil
- Adenine
- Guanine
- Cytosine
Explanation:
Since we only have one strand shown, I'm going to assume it is RNA. Both DNA and RNA have nucleic acids, but RNA has 1 different nucleic acid; it replaces Thymine with Uracil. So the 4 nucleic acids are uracil, adenine, guanine, and cytosine.
If the picture shown is a cross-section of DNA, then our 4 nucleic acids are adenine, thymine, guanine, and cytosine.
Answer:
RNA is pictured on the right, with one strand of nucleotides consisting of a phosphate group, the sugar ribose, and on of four nitrogenous bases.
Explanation:
Did the test
Which of the following would be most likely to cause a mutation?
A. the addition of nucleotides to the 3' end of the growing strand
B. the insertion of a mismatched nucleotide into a DNA strand
C. the unwinding of the DNA strand
D. the synthesis of short stretches of DNA
Answers
Answer:
i think its B
Explanation:
its B.........
g If you look carefully at this organism, you will not see any organs for gathering oxygen or releasing carbon dioxide or ammonia. There is no circulatory system. How does this animal perform these functions
Answers
Answer:
Simple unicellular organisms like Amoeba and some multicellular organisms like Hydra use their cell surface and skin for gaseous exchange with their environment.
Note: The organism in the question was not stated.
Explanation:
The complexity of an animal determines its metabolic needs, and hence, its requirement for specialized structures and functions.
Simple unicellular organisms are able to meet their metabolic needs such as gaseous exchange by simple diffusion through their cell surfaces. Such organisms include amoeba, paramecium, etc.
Some multicellular organisms lack specialized organs for nutrient transport and gaseous exchange such as hearts and blood vessels, etc. Example of such organisms are Hydra and Planaria. They have their cell surfaces in contact with the external environment, and thus use their skin for gaseous exchange by means of diffusion.
Look at the diagram of mitosis shown below.
Parent cell
DNA replicates
2 daughter
cells
Which statement describes the part of cell theory shown in this diagram?
A. All cells come from other cells.
B. All organisms are composed of cells.
C. Cells are the basic units of living things.
D. Some organisms are single-celled and some are multicellular.
Answers
why do autotrophs have to go through BOTH processes?
Answers
Answer:Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.
Explanation:
Describe the anatomic location of the pancreas relative to the other organs in the upper portion of the abdominal cavity
Answers
Answer:
super cala fragilistic expiladocious
Explanation:
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The primary "food"
produced by
photosynthesis is a
6-carbon sugar called
Answers
Answer:
The primary "food" produced by photosynthesis is a 6-carbon sugar called glucose.
Explanation:
Through photosynthesis, plants use the sunlight to create a sugar called glucose. The plants use this energy to create other substances, such as starch and cellulose. This gives them the nutrients and vitamins they need to grow.
Hope this helps! :)
PLEASE HELP ME WITH THIS QUESTION
Answers
Answer:
oxygen
Explanation:
in photosynthesis the plants that uses carbon dioxide and light energy to produce glucose and release oxygen
Which of the following elements continuously flows in the nitrogen cycle?
O Nitrogen
O Oxygen
O Hydrogen
O Carbon
Answers
Answer:
Nitrogen flows continuously in the nitrogen cycle
Explanation:
...............
The mud that you feel between your toes as you wade into a lake is part of the lakes
Answers
Answer:
? wait what? Please explain the question!
Explanation:
Click and drag the labels into the appropriate box to identify whether the function of the connective tissue component of a muscle is
definite or theorized
one the muscle
Prevents the muscle
Surrounds a single
Answers
Answer:
surrounds a single
Explanation:
List Characteristics of Parasites.