Question

question 4 1 pts during gene flow, new individuals contribute their alleles to the gene pool of a population. crossing-over creates new combinations of alleles during gamete formation. alleles that make an individual more successful move from one population to another. chance events alter the gene pool of a population.

Explanation:

• Analyze each option:
• Option 1: Gene flow involves the transfer of alleles between populations. When new individuals (from another population) join a population, they contribute their alleles to its gene pool. This matches gene flow.
• Option 2: Crossing - over is part of meiosis (genetic recombination within a population), not gene flow.
• Option 3: Gene flow is about movement of alleles between populations, not based on "success" of alleles.
• Option 4: Chance events altering gene pool is genetic drift, not gene flow.

Answer:

A. new individuals contribute their alleles to the gene pool of a population.