Use the Following to Answer Questions

question 58

Multiple Choice

Use the following to answer questions
The height of a type of bean plant is determined by five unlinked genes called A, B, C, D, and E. Each gene has two alleles: additive (uppercase letter) and nonadditive (lowercase letter) . The shortest plants are 130 cm. The tallest plants are 220 cm. The genotypes are known for two bean plants. Plant 1 is genotype AABbccDdEE. Plant 2 is genotype aaBBCcDdEE.
-If these two plants are crossed, could they produce a plant that is taller than either parent? How?

• A) No. Even if the progeny plants had seven additive alleles, it is not possible for it to be taller than either of the parents.
• B) No. Environmental factors would prevent the offspring of the cross from inheriting additional additive alleles.
• C) Yes. It is possible for these plants to produce a plant that has seven or eight additive alleles, making it taller than either parent.
• D) Yes. It is possible for the progeny plants to be taller than either parent, but only if a nondisjunction event occurred in either of the parents when making gametes.
• E) No. Because the parent plants are homozygous for most of the genes, they will be taller than any progeny plants they produce.

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