Question

Question 4 When a gene pool experiences gene flow, this means that individuals capable of reproduction are moving between populations O the gene pool is undergoing mutations Individuals flow out of a population to colonize a new habitat in small populations, the frequency of alleles is altered due to chance events D Question 5 Which is an example of a post-zygotic reproductive isolation? Two species of gartersnake live in the same area, but one species lives mainly in water, and the other lives mainly on land Mules, the offspring of a horse and a donkey fall to produce offspring when mating with horses The sperm of one species of sea urchin are unable to fertilize the eggs of a similar species Large dogs and wolves can successfully breed and produce healthy offspring for multiple generations D Question 6 The Gradualism model of speciation is best supported by a fossil record with o long periods where the fossils show little change separated by short periods where there is a lot of change O numerous gaps between morphological forms O numerous different morphological forms in each period intermediate forma expressing the accumulation of small changes over tiene

Answer 1

4. Answer: Option A is correct
Explanation:
Gene flow = Movement of reproductive individuals between populations
It does not involve mutations.
Change in allele frequency due to chance events = Genetic drift

5. Answer: Option B is correct
Explanation:
Post-zygotic barriers prevent the hybrid zygote to develop into a viable/fertile adult
Ex: Mule