What does it mean that an allele increases an organism's fitness? Choose one of the following: it increases the likelihood of that organism surviving and reproducing in their current environment it increases the health and strength of the organism it increases the likelihood of that organism surviving and reproducing in ANY environment

What does it mean that an allele increases an organism's fitness? Choose one of the following: it increases the likelihood of that organism surviving and reproducing in their current environment it increases the health and strength of the organism it increases the likelihood of that organism surviving and reproducing in ANY environment

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Description: What does it mean that an allele increases an organism's fitness? Choose one of the following:it increases the likelihood of that organism surviving and reproducing in their current environmentit increases the health and strength of the organismit in

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 1QP

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Which of the following statements about genetic fitness and/or selection is false? Group of answer choices Individuals with low fitness have greater selection coefficients Fitness involves both relative viability and reproductive success Individuals with high fitness have greater selection coefficients Selection against recessive alleles tends to be slower overall than dominant alleles because of the survival in heterozygotes
Which of the following is a form of a heritable trait that enhances an individual’s fitness? Adaptation Lineage Fitness
Which of the following are arguments against the expression "survival of the fittest"? Choose all that apply. (1, 2, 3, or 4 could be correct) "Fittest" implies absolute fitness, when relative fitness of one genotype compared to others is more important "Fittest" makes it sound like it is about physical fitness, when whether an individual reproduces may depend on other traits "Fittest" makes it sound like an individual will be fit in all environments, when in reality the same genotype may have different fitness in different environments Reproduction is more important than survival for transmitting genetic differences to progeny
Which of the following is the definition of a gene pool? The combination of alleles that an individual organism possesses. All the alleles in an ecosystem. The total number of individuals in a population. All the alleles in a population of a particular species.
Which of the following principles of selection are true for both the sickle cell and rock pocket mice examples? Check all that apply. (1 or more are correct). Group of answer choices A_The same genotype can have higher fitness in one environment, but lower fitness in another environment B-Some genotypes have higher fitness than other genotypes C-Some genotypes have lower fitness than other genotypes
Why is "fitness" in selection referred to "relative fitness"? Group of answer choices A_"Relative fitness" refers to fitness of a genotype relative to the environment that organisms are in B_"Relative fitness" refers to fitness of some genotypes relative to other genotypes in a population
The graph below shows values for body size in parents and offspring. The data shown are consistent with which of the following situations. ANSWER CHOICES A. variation in body size is completely due to variation in the environment (heritability is 0) B. most of the variation in body size is due to variation in the environment but there is a small effect of genes (heritability is around 0.2) C. variation in body size is completely due to variation in genes (heritability is 1.0) D. most of the variation in body size is due to variation in genes but there is some effect of the environment (heritability is about 0.8)
What would happen if a mutation created a new allele that decreased fitness? * The new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness. The individual with the new allele would wait for an environmental change so that its fitness would increase again No answer The new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring The new allele would spread through the population and decrease the fitness of that population
Which of the following is likely to be observed if there has been a strong positive selection on a particular genetic locus within a population? Group of answer choices There will be a lot of variation in DNA surrounding the genetic locus in question within the population. There will very little variation in DNA surrounding the genetic locus in question within the population. You will see very low frequencies of the genetic locus in question
Hardy Weinberg equilibrium in a population refers to Group of answer choices equal numbers of females and males. lack of mutations affecting the observed phenotypes. equal numbers of dominant and recessive alleles. unchanging allele frequencies in successive generations. proportional numbers of each genotype.
There are two traits in moths: light color and dark color. If a population has 60%of the moths with the light color, using Hardy-Weinberg, what can be predicted about the offspring of the population if no environmental factors are present? 40%of the offspring will be dark in color 40%of the offspring will be light in color 60%of the offspring will be dark in color 50%of the offspring will be each color
Which of these individuals has the highest relative fitness? An individual that produces 999 offspring in a population where the average number of offspring is 1000 An individual that produces 5 offspring in a population where the average number of offspring is 1000 An individual that produces 5 offspring in a population where the average number of offspring is 4 An individual that produces no offspring, but has the highest muscle mass in population