Question

a few lizards from another island arrived after the storm. which mechanism of evolutionary change does this represent?

• gene flow
• genetic drift
• artificial selection
• nonrandom mating

which mechanism of evolutionary change could occur if the island’s small post - storm population led to random allele frequency shifts?

• gene flow
• genetic drift
• nonrandom mating
• disruptive selection

Explanation:

For the first question: Gene flow is the transfer of genetic material between populations, which matches individuals from one island moving to another.
For the second question: Genetic drift refers to random changes in allele frequencies, especially impactful in small populations, which aligns with the scenario of a small post-storm population having random allele frequency shifts.

Answer:

1. Gene flow
2. Genetic drift