What is a selective sweep? O When a beneficial mutation is lost due to genetic drift. O When a beneficial mutation is so strongly selected for, that it replaces (deletes) the other allele and becomes fixed in the population. O When a deleterious mutation transitions through an adaptive valley.

An evolutionarily stable strategy (ESS) is a Group of answer choices strategy that, if adopted by all members of the population, cannot be invaded by a mutant strategy. strategy that, if adopted by part of a population, cannot be invaded by a mutant strategy. mutant strategy that cannot invade a population. strategy that, if adopted by all members of the population, can be invaded by a mutant strategy.

In 1959 Daniel Yuh set up a long-term study of cataloging the blood types of a group of foragers in the Brazilian rainforest. In 1959 he found there were no individuals with blood type B. Three generations later, after this group had begun exchanging mating partners with another group, there were several members with blood type B. A-mutation B-natural selection C-gene flow D-genetic drift

What is an adaptation? (select all that apply) The only means of natural selection. A trait that gives an organism a reproductive advantage in its current environment OA trait that gives rise to a new species An individual's attempt to conform to its environment A property that occurs at the population level.

. What is adaptive radiation? Explain it with the example of Darwin's finches.

In a population of mayflies, variation in the STRIPE gene causes different body coloration. SS individuals have skinny stripes, Ss individuals have wide stripes, and ss individuals are unassigned. You collect some mayflies and estimate that the frequency of the S allele is 0.85. You want to know whether the population is evolving, so you will return to the same site next summer and collect 1000 mayflies from the next generation. If the population is not evolving, how many of the 1000 mayflies collected next summer should have wide stripes. (round to the nearest whole number) A. 255 b.850 C. 723 D. 23

After some time, individuals begin to migrate between islands 2 and 3, but the overall population size remains at 40 individuals on each island. On island 3, you would expect that the red allele frequency will decrease, but the yellow and blue allele frequencies will increase over time. Select one: O True O False After many generations, you return and sample individuals from the mainland coastal region and island 2, and you discover that the same mutation, a green allele, has appeared in both populations. It is present in five individuals in the mainland population and in five individuals in the population from island 2. True or False? Mutation is a stronger evolutionary mechanism in the large mainland population than in the small island population. Select one: O True O False

Gene flow often increases genetic diversity of populations that come together. Which of these is an example of when gene flow could reduce genetic diversity if two populations (Population A and Population B) come together? O The offspring with parents from population A and B have low survival because they are not adapted to the environment. O Individuals from population A have an allele that is not found in population B. O Individuals from population B have an allele that is not found in population B O Population A only has homozygous recessive alleles and population B only has homozygous dominant alleles.

What is an adaptation? (select all that apply) A trait that more prevalent in a population as the result of natural selection O A trait that gives an organism a reproductive advantage in its current environment A trait that gives rise to a new species