Question

This question refers to the gene for the ability to taste PTC.One member of a couple is homozygous dominant and the other is a non-taster of PTC.Answer the questions below regarding the expected offspring.4a. What is the percentage chance of an offspring of this couple being a Taster of PTC? (1 mark).4b. What is the percentage chance of an offspring of this couple being Heterozygous for the allele?

Answer 1

Considering the data, we have the following:

Parent 1 homozygous dominant

AA

Parente 2 non PTC taster

aa (considering that the ability to taste PTC is given by a dominant allele A)

Then, having this clear, we could do a Punnet square to answer the first question.