A dihybrid cross for unlinked genes
A) results in a genotypic ratio of 2:1.
B) involves genes located on the sex chromosomes.
C) results in offspring of lower quality than that of the parents.
D) is a cross of a double heterozygote and a double homozygote.
E) is a cross between identical double heterozygotes.

Question

Quizplus · Accepted Answer

A dihybrid cross for unlinked genes involves crossing individuals who are heterozygous for two different traits that are on different chromosomes. These individuals can be considered identical double heterozygotes. The resulting offspring will show a 9:3:3:1 phenotypic ratio and a 1:2:1:2:4:2:1:2:1 genotypic ratio. There is no basis for any of the other answer choices.

A Dihybrid Cross for Unlinked Genes