Two isolated populations of lizards live on separate islands. Some individuals from island A are transplanted to island B, and they successfully breed with the local lizards. What effect does this event have on the genetic differences between the two populations' gene pools? Can this logically cause the population on island B to less adapted to its environment? Gene pools become more different; No Gene pools become more different; Yes Gene pools remain the same; Yes Gene pools become more similar; No Gene pools become more similar; Yes Gene pools remain the same; No

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

You discover that there are 4 alleles for the “w” gene that determines wing shape in flies.  Is this a violation of Hardy-Weinberg model? Group of answer choices Not if one of the alleles is present only in females. Not if the trait is determined by sexual selection. Not if all four alleles are present in the population. Yes, because Hardy-Weinberg can only be applied to genes with 2 alleles. None of the answers shown are correct.

In this version of the simulation (500 population size; 500 carrying capacity), all fish are equally likely (though not 100% likely) to survive and reproduce. There are no mutations, nor are there any entering or leaving the population. When they reproduce, they choose a mate from the pool at random and produce ten offspring by chance with the probability of the offspring’s genotypes determined by the punnett square. What caused the allele frequencies to change and vary in the trials? (ex attached).

What type of selection reduces genetic variation in a trait? disruptive? balancing? directional? stabilizing?   Explain why

Under which of the following scenarios would variation be maintained? Selection acting on a dominant high fitness allele Selection acting on a recessive high fitness allele Selection favoring heterozygotes Selection acting against heterozygotes None of the above

Why does the response to selection often level off after many generations of selection?