HELP ASAP. A student uses a marble simulation to illustrate genetic drift. She starts with a population of 40 individuals, represented by 20 red marbles and 20 yellow marbles. What do these marbles represent in this simulation?

The correct answer would be - marbles represent alleles for a particular trait that has an allelic frequency of 0.5 in this simulation.

Explanation:

In this given representation or simulation to illustrate genetic drift, a student used marbles of different colors. She used 20 red and 20 yellow marbles in a population of 40 individuals. In this simulation, she used each marble color red and yellow to represent the allele for a particular trait.

That means red marbles represent alleles that are specific to a trait of a gene and similarly yellow marble represents another trait of the same gene. It is also represented that both alleles are present in the same number which means they have alllelic frequency of 0.5.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.