Imagine Two Different Pea Plant Strains: One of Which Has

question 139

Multiple Choice

Imagine two different pea plant strains: one of which has a trait that is produced by the interaction of many genes, and the other of which has a trait that is produced by a single gene with two alleles and incomplete dominance. If each of these pea plant strains self-fertilizes, how would the progeny of each cross differ?

• A)They would not differ, and progeny of both crosses would have an array of phenotypes that vary continuously across a range.
• B)The progeny from the cross of the plant with the single-gene trait would all be identical, whereas the progeny from the cross of the plant with the multiple-gene trait would vary continuously across a spectrum.
• C)The progeny from the cross of the plant with the single gene trait would have three phenotypes, whereas the progeny of the cross of the plant with the trait caused by many genes would have a more complex array of phenotypes.