The following questions are on natural selection: 1.A)Which of the following sentences best describes ‘gene flow’:...
The following questions are on natural selection:
1.A)Which of the following sentences best describes ‘gene flow’: A) An animal moved from one place to another B) An animal moved from its birth place to a new place C) An animal mated with an animal from another place D) An animal mated with an animal from the same place
B)Why is it useful in population genetics to consider the concept of a ‘gene pool’? A) Evolution acts on a pool of individuals in a population B) Evolution acts on the pooled allele frequencies in a population C) Genes are pooled in their effect on individuals D) Genes are pooled in their effects on populations
Homework Answers
1.
Option C is correct.
Gene flow occurs only when an animal from one geographic location mates with an animal belonging to another location.
Mere migration of an animal to another location without sexual reproduction does not lead to gene flow.
Without sexual reproduction, the genes will not flow from one generation to the other.
2.
Option C is correct.
AN organism's phenotype is the collective outcome of all the interacting genes.
Evolution acts at the individual level.
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The following questions are on natural selection:
1.A)Which of the following sentences best describes ‘gene flow’:...
biology please help--gene pools 1. One of the important theoretical concepts in population genetics is that...
biology please help--gene pools
1. One of the important theoretical concepts in population genetics is that of genetic equilibrium, which the Aarge, randomly mating population, allele frequencies do not change from generation to generation frequencies in a population are to remain unchanged, all of the following teria must be met the population must be Irge, there must be no mutation or gone flow, masing must be randon, and there must be no natural selection El Is a consequence of swarty...
6. Which of these conditions will lead to evolution by natural selection? a. Heavy metal pollution...
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heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
Which condition can lead to two populations becoming different species? all of these A barrier to...
Which condition can lead to two populations becoming different species? all of these A barrier to gene flow exists between the two populations. Individuals in the two populations have significant genetic differences from one another. Individuals may live in geographically isolated areas. Individuals in the two populations mate at different times. Which of these is NOT an example of adaptive evolution? bottleneck all of these gene flow founder effect Mutation Which of these does NOT influence allele frequencies in a...
Can you complete this concept map that reviews some key ideas about evolution? Part A Drag...
Can you complete this concept map that reviews some key ideas about evolution? Part A Drag the labels from the left to their correct locations in the concept map on the right. Reset Help Populations allele frequencies include individuals with differences due to 6 are units that undergo may be in genetic drift genetic variation sources are if change in if no change in maintained only if mutation Hardy-Weinberg equilibrium large population size, no gene flow, no mutation, random mating,...
Any group of the same biological species in a geographical area that can mate and produce...
Any group of the same biological species in a geographical area that can mate and produce offspring. A. Gene Pool b. Natural Selection c. Migration d. Cline e. Gene Flow f. Nonrandom Mating g. Genetic Load h. Population i. Genetic Drift Occurs when people with a particular genotype are more likely to produce offspring under a specific environmental condition. A. Gene Pool b. Natural Selection c. Migration d. Cline e. Gene Flow f. Nonrandom Mating g. Genetic Load h. Population...
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It...
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It can cause allele frequencies in a population to be in genetic equilibrium. b. It can cause a dominant allele for a gene to become more abundant in a population. c. It can cause an allele to become more abundant in a population if it provides a fitness advantage over other alleles for that trait. d. It is an evolutionary force that prevents natural populations...
Questino 7. How I genetic drift different from natural selection? A. Natural Selection occurs because some...
Questino 7. How I genetic drift different from natural selection? A. Natural Selection occurs because some alleles confer higher fitness, whereas genetic drift occurs because of sampling error. B. Natural selection has a stronger effect in large population, whereas genetic drift acts primarily in small populations. C. Natural selection is a mechanism of evoltion, whereas genetic drift is not a mechnaism but an outcome of evolution. D. Natrual selection tends to cause very rapid evolution whereas gentic drift tends to...
help 4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held...
help
4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held all the species and each catastrophic event would destroy certain species - survivors would repopulate the world b.) Environmental pressures and internal needs bring about changes in body form and function and this is passed on to their offspring c.) Process in which individuals with favorable inherited traits are more likely to survive and reproduce at a higher rate than other individuals 5.) Convergent...
In the case of directional selection, if the advantageous allele (b) is recessive and a less...
In the case of directional selection, if the advantageous allele (b) is recessive and a less advantageous allele (B) is dominant: A. b will be lost in the population because the dominant allele will increase in frequency by natural selection B. b will increase in frequency at the same speed as if it was a dominant advantageous allele, because what matters is the coefficient of selection and not if the allele is dominant or recessive C. b will increase in...
biology please help--gene pools
1. One of the important theoretical concepts in population genetics is that of genetic equilibrium, which the Aarge, randomly mating population, allele frequencies do not change from generation to generation frequencies in a population are to remain unchanged, all of the following teria must be met the population must be Irge, there must be no mutation or gone flow, masing must be randon, and there must be no natural selection El Is a consequence of swarty...
6. Which of these conditions will lead to evolution by natural selection? a. Heavy metal pollution reduces reproductive success of all phenotypes of green algae in the pond. b. Variation among individuals is not genetic; instead it results from learned behavior or physiological environmental responses. c. Introduction of an exotic predator species results in one native prey phenotype evading predation while other phenotypes get eaten. d. Individuals of the population are clones (genetically identical). 7. Which one is used as...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
Can you complete this concept map that reviews some key ideas about evolution? Part A Drag the labels from the left to their correct locations in the concept map on the right. Reset Help Populations allele frequencies include individuals with differences due to 6 are units that undergo may be in genetic drift genetic variation sources are if change in if no change in maintained only if mutation Hardy-Weinberg equilibrium large population size, no gene flow, no mutation, random mating,...
help
4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held all the species and each catastrophic event would destroy certain species - survivors would repopulate the world b.) Environmental pressures and internal needs bring about changes in body form and function and this is passed on to their offspring c.) Process in which individuals with favorable inherited traits are more likely to survive and reproduce at a higher rate than other individuals 5.) Convergent...
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