When one gene is able to modify the effect of a second gene, the phenomenon is known as:
A)simple dominance.
B)epistasis.
C)recessiveness.
D)independent assortment.
E)segregation.

Question

Quizplus · Accepted Answer

Epistasis occurs when the expression of one gene depends on the presence of one or more modifier genes. In this case, the modifier gene can change or influence the effect of another gene, leading to different phenotypic outcomes. This is different from simple dominance, which involves the expression of one dominant gene over a recessive gene. Independent assortment and segregation relate to the segregation and distribution of alleles during meiosis.

When One Gene Is Able to Modify the Effect of a Second