Whenever the dominant allele of either or both) gene A or gene B is present, red colour is produced. A cross of
AaBb × AaBb can be expected to yield how many red offspring out of 16? Assume the genes are not linked.

Question

Quizplus · Accepted Answer

For red color to be produced, at least one dominant allele of gene A or gene B must be present. The only genotype that does not produce red color is aabb. Using a Punnett square for AaBb × AaBb, we find that 15 out of 16 combinations have at least one dominant allele (A or B), resulting in red offspring. The 16th combination is aabb, which does not produce red color.

Whenever the Dominant Allele of Either or Both) Gene a or Gene