Question

A homozygous eggplant is dark purple (pp) or white (ww). When an eggplant that has heterozygous genes has a phenotype of a violet color (pw), what type of inheritance does this show?

1) recessive inheritance
2) incomplete dominance
3) codominance
4) dominant inheritance

Answer 1

The phenotype of the violet color in a heterozygous eggplant is an example of incomplete dominance, where one allele does not completely dominate over the other, creating a blended phenotype. The correct option is 2) incomplete dominance

Step-by-step explanation:

The inheritance pattern shown by the heterozygous genes of the eggplant, which produces a phenotype of a violet color when crossed with a dark purple (pp) or white (ww) homozygous eggplant, is an example of incomplete dominance. In incomplete dominance, the intermediate phenotype is a result of one allele not being completely dominant over the other, leading to a blend of the two parental traits in the heterozygote.

The dark purple (pp) and white (ww) forms are homozygous, and the violet (pw) is the result of the incomplete dominance as it expresses neither the full dark purple nor the full white coloring but rather an intermediate violet color. The correct option is 2) incomplete dominance