Red coloration in wheat seeds is a complex trait influenced by three unlinked genes, each with two different alleles A and a; B and b; C and c. This Punnett square shows the results of a mating between two plants that are both heterozygous at all three genes. Each dominant allele, represented by an uppercase letter, contributes to the red coloration.

Question

Red coloration in wheat seeds is a complex trait influenced by three unlinked genes, each with two different alleles A and a; B and b; C and c. This Punnett square shows the results of a mating between two plants that are both heterozygous at all three genes.  Each dominant allele, represented by an uppercase letter, contributes to the red coloration.

Quizplus · Accepted Answer

The Punnett square shows that the offspring produced from the mating between two plants that are both heterozygous at all three genes have a 9:3:3:1 ratio of genotypes for the three genes. This means that there is a possibility for each dominant allele to contribute to the red coloration, leading to a complex trait influenced by all three genes.

Red Coloration in Wheat Seeds Is a Complex Trait Influenced