Which of the following does NOT create variation within a population?
a. mitosis
b. genetic shuffling
c. sexual reproduction (meiosis)
d. mutations
Answer:
d
Explanation:
because mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Mitosis does not create variation within a population.
What 4 processes create variation within a population?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis .
What is variation in population?Variation among populations refers to the level of differences between two or more populations.
Hence, A is correct option
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Kerry was investigating how the angle of incidence of radiant energy on a surface affects the rate of temperature rise of the surface. A paper pocket holding a thermometer was placed near a lamp. The paper pocket was then placed at various angles so that the angle of incidence of the radiant energy varied. Kerry made sure the distance to the lamp was the same for each of his trials.
The following table shows the data recorded by Kerry.
a. What is the manipulated variable?
b. What is the responding variable?
c. Identify one controlled variable.
Answer:
a. What is the manipulated variable? the angle of incidence of the radiant energy
b. What is the responding variable? the rate of temperature rise on the paper surface
c. Identify one controlled variable? the distance of the paper to the lamp
Explanation:
Manipulated variable: Refers to all the variables in an experiment that provoke a response in another variable. They are also known as independent variables. The researcher can change these variables to see what changes it implies in an object, process, trait, or anything that depends on them. In the exposed example, the researcher manipulates the angle of incidence of the radiant energy to evaluate how it affects the rate of temperature rise of the surface.Responding variable: Refers to the dependant variable, which response depends on any change in the independent variable. A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the rate of temperature rise on the paper surface, and its value depends on the angle of the paper.Controlled variable: Refers to those variables in an experiment that are controlled and have no influence on the results. These variables do not affect the change in the dependent variable values. In the exposed example the distance to the lamp is the controlled variable, as it was the same for each of his trials.someone plsss. Using the data, describe the relation between the angle of incidence and the rate of temperature change
Draw the structure of DNA aand write a short note about it.
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
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A fetus has been developing for three months . What will happen next? A. Vocal cords develop . B. Hands and feet form . C. Blood starts pumping . D. External sex organs form .
Answer:
D. External sex organs form .
Explanation:
There are three stages in fetal development that include germinal, embryonic, and fetal period.
Three months means, it will be the 12 week of the fetal development and called fetal period. At the end of this stage, baby's external genitalia or sex organs will start developing such as penis in male and vagina in female.
Hence, the correct option is D.
Answer:
Vocal cords develop.
Explanation:
Chemical reactions move at a different speeds when a chemical reaction is moving at a slow speed what can be done to speed up the reaction
Explain any four functions of the skeleton system
Answer:
The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis.
Explanation:
A mutation can cause a defect in human hemoglobin. Which would result in this type of mutation?
choices ; decreased ability to carry oxygen
development of cancerous tumors
inability to break down sugar
development of bacterial infections
PLS ANSWER ITS A TESTT !!!
Answer:
decreased ability to carry oxygen
Explanation:
A mutation can cause a defect in human hemoglobin, Which would result in - decreased ability to carry oxygen.
Hemoglobin is an iron-rich protein found in red blood cells that gives red blood cells their unique red color. Hemoglobin is the protein responsible for carrying oxygen in red blood cells.
A mutation in the hemoglobin gene changes the hemoglobin protein in a way that causes sickle cell anemia.Sickle cell disease is caused by mutations in the beta-globin (HBB) geneThis mutation leads to the production of an abnormal version of a subunit of hemoglobinThis mutated version has decreased ability to carry oxygenThus, a mutation can cause a defect in human hemoglobin, Which would result in - decreased ability to carry oxygen.
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What is the snake in the food web?
a. 3rd level consumer
b. producer
c. 2nd level consumer
d. primary consumer
Answer:
In this food web the snake is a secondary consumer
Explanation:
There are two things that are bigger and stronger than snakes, the bird and wolf. But the snake does not eat the plants. Primary consumers eat primarily vegetarian. Secondary consumers eat primary consumers. Hope this helps! :)
Answer:
c. 2nd level consumer
Explanation:
Snakes are at the 2nd level in the food web.
Mutations that affect multiple genes or entire chromosomes usually take place during
a.translation
b.meiosis
c.transcription
d.mitosis
e.replication
Answer: e
Explanation:
What happened at Chernobyl? (first to answer this will be marked as the brainliest)
Which of the following is the largest?
A. the Universe
B. the Solar System
c. the Milky Way Galaxy
D. the Sun
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Why do you think it is important that our bodies can respond to stimuli around us?
Answer: it is important that our bodies can respond to stimuli around us because without it, you wouldn’t be able to detect and respond to changes in their internal and external environment. Cells called receptors, which detect stimuli (changes in the environment). The stimuli is part of our control system, it is very vital.
what is a compression in physical science
Answer:
A compression is a region in a longitudinal wave where the particles are closest together. ... The region where the medium is compressed is known as a compression and the region where the medium is spread out is known as a rarefaction.
Explanation:
1. **How does the amount of carbon the US emits compare to other countries?
Answer:
5.1 billion metric tons of carbon is emitted by U.S as compared to other countries which emits about 32.5 billion metric tons of carbon.
Explanation:
U.S emits about 5.1 billion metric tons of carbon in the atmosphere which contribute in air pollution also helps in rising the temperature of the earth atmosphere because carbondioxide is a green house gas which increases the earth temperature. The main reason of high amount of carbon emission is the high number of industries and more fossil fuels is burnt in the engines of vehicles.
Which of the following statements correctly describes the inheritance pattern of mtDNA?
how mule is produced?
Answer : horse mare and a donkey jack hybrid of both
Explanation:
In a rainforest what might be a limiting factor for the toucan population
A) lots of sunshine
B) deforestation
C) plenty of rain
D) fertile soil
Use the Harris-Benedict equation to estimate your calorie needs. Show your calculations to explain how you arrived at your answer.
Answer:
The Harris Benedict Equation is a formula that determines the total daily energy expenditure (calories) using BMR with some activity factors.
Basal Metabolic Rate (BMR) is defined as the amount of calories one would burn without doing anything for 24 hours. It uses variables of weight, age, height and gender to calculate BMR.
BMR calculation = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)
In Harris Benedict Equation, BMR is multiplied by activity factor to determine calories need.
The activity factors in Harris Benedict Equation are:
for no exercise = 1.2
exercise for 1 to 3 days/week or light exercise = 1.375
exercise for 3-5 days/week or moderate exercise = 1.55
exercise for 6-7 days a week or hard exercise = 1.725
exercise for 2 times training = 1.9
So, calculation for my calorie needs is as following:
BMR = 447.593 + (9.247 x 50 kg) + (3.098 x 164.592 cm) - (4.330 x 23 in years) = 974.945
Calorie needs = BMR x 1.55
= 974.945 x 1.55
= 1511.16 calories
Answer:
The Harris Benedict Equation is a formula that determines the total daily energy expenditure (calories) using BMR with some activity factors.
Basal Metabolic Rate (BMR) is defined as the amount of calories one would burn without doing anything for 24 hours. It uses variables of weight, age, height and gender to calculate BMR.
BMR calculation = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)
In Harris Benedict Equation, BMR is multiplied by activity factor to determine calories need.
The activity factors in Harris Benedict Equation are:
for no exercise = 1.2
exercise for 1 to 3 days/week or light exercise = 1.375
exercise for 3-5 days/week or moderate exercise = 1.55
exercise for 6-7 days a week or hard exercise = 1.725
exercise for 2 times training = 1.9
So, calculation for my calorie needs is as following:
BMR = 447.593 + (9.247 x 50 kg) + (3.098 x 164.592 cm) - (4.330 x 23 in years) = 974.945
Calorie needs = BMR x 1.55
= 974.945 x 1.55
= 1511.16 calories
Explanation:
Which would be least likely to pollute water with heavy metals
Answer: Large quantities of heavy mental are used in wood to promote gloss, hardness and durability.During the sawing of this wood,many heavy metal particles are discharged health as well as contamination of water bodies such as rivers and lakes.
En un juicio, se solicita una prueba de paternidad para esclarecer un conflicto donde dos hombres indican ser padres de dos adolescentes (un niño y una niña). Uno de los posibles padres no es hemofílico, mientras que el otro si que presenta esta enfermedad. Por otro lado, ni la mujer ni los hijos tiene hemofilia, aunque si que se ha detectado que la hija es portadora de esta enfermedad.
Answer:
The father is the hemophilic person
Explanation:
Hemophilia is a recessive genetic disorder that is linked to the X chromosome. This disease is associated with a congenital blood coagulation disorder.
Since hemophilia is linked to the X chromosome, females can be both heterozygous (mosaic expressing both alleles) and homozygous, while males always have hemophilia.
Describe classification as a work in progress
Answer:
quick me
Explanation:
Describe classification as a work in progress
Since it reflects the most current understanding of how living things are related, new discoveries can change the way living things are classified also something is always changing
Many organisms spend most of their life cycle in the diploid state. If meiosis produces haploid cells, then
In wild populations, evolution is often causedby natural selection. Based on what you have observed, how does natural selection occur?
Answer:
In natural selection, genetic mutations that are beneficial to an individual's survival are passed on through reproduction. This results in a new generation of organisms that are more likely to survive to reproduce. ... Those differences are at least in part determined by their genes.
Explanation:
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Which nitrogen base sequence is the partner of C–A–T–C–G–A?
Answer:
The Answer is G-T-A-G-C-T
Explanation:
Answer:
G–T–A–G–C–T
(b)
Examples that show between species DNA show , and give evidence of evolution.
Answer:
Evidence of evolution can be identified through fossil records, testimonial fossils, biography, anatomy, and embryology. An example of a species DNA is the peppered moth, whereby light-colored moths are eaten by birds, unlike the dark colored ones which seem to camouflage on dark backgrounds. Evolution changes the genetic makeup of a population over time and may happen on a large scale or small scale basis which affects either one of a few genes over a short period.
Answer:
1) similarities
2) descent from a common ancestor
3)A,C,D
Explanation:
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25 PTS. IF ANSWERED
If the DNA sequence is TGC ACG TAC, then the mRNA sequence is:
A.) ACG UGC AUG.
B.) ACG TGC ATG.
C.) AGC UCG AUC.
D.) AGC AGC ATG.
Answer:
A.) ACG UGC AUG. The answer is A
Explanation:
does a solar or lunar eclipse have a bigger impact on earth? (15 points)!
Answer:
solar eclipse
Explanation: because the are harmful to view while lunar are safe to view without any eye gear! :)
Evan:the sun ismore important to the earth yes but it's because when eclipoes happen animals and plants have their cycles
wind energy takes _____
energy and turns it into _____ energy
heat; mechanical
mechanical; electical
electrical; mechanical
heat; electrical
Answer:
3) mechanical; electrical
Explanation:
Wind energy takes mechanical energy and turns it into electrical energy
How many times greater is the concentration of DDT at the highest trophic level than at the lowest trophic level?
Answer:
Biomagnification (or bioaccumulation, or biological amplification) is the increase in the
concentration of persistent chemicals (such as pesticides) in ecosystems as they pass
up the levels of a food chain or food web.
100 000X more concentrated