Punnett Square Probability Practice Problems
Two pea plants heterozygous for the characteristics of size and flower colour are crossed, and the Punnett square for this cross is given below. What will be the phenotypic ratios?
Assume that independent assortment happens in all gene pairs. What will be the probability of AABbCc and AaBBCC parental genotypes producing offspring with AaBbCc genotype?
Assume that in three genes undergoing independent assortment, the genotype of F1 individuals involved in a trihybrid cross is AaBbCc. Which of the following genotypes will have an existing probability of 1/256 in the F2 offspring?
A man has polydactyly which is a dominant trait. His wife and their daughter have the normal number of digits. What fraction of this couple's children would have a normal number of digits?
Assume that the homozygous dominant trait of a flower is red and long-stemmed and the homozygous recessive trait is white and short-stemmed. Considering that these traits are controlled by independently assorting genes, what is the probability of producing a heterozygous red flower and heterozygous long-stemmed flower from heterozygous parents?