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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 the progeny plant from an AbcdE gamete from plant 1(AABbccDdEE) and an aBcdE gamete from plant 2 (aaBBCcDdEE) was a few centimeters taller than your prediction, how would you explain it?
A) Crossing over occurred within the A-E region that created recombination in the progeny.
B) The height trait is likely also influenced by environmental conditions as well.
C) The genes A-E do not actually work in an additive manner but rather in a dominant mode of inheritance.
D) Multiple alleles must be present in at least two of the loci involved.
E) There are actually more loci involved than just genes A-E.

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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 the progeny plant from an AbcdE gamete from plant 1(AABbccDdEE) and an aBcdE gamete from plant 2 (aaBBCcDdEE) was a few centimeters taller than your prediction, how would you explain it?
A) Crossing over occurred within the A-E region that created recombination in the progeny.
B) The height trait is likely also influenced by environmental conditions as well.
C) The genes A-E do not actually work in an additive manner but rather in a dominant mode of inheritance.
D) Multiple alleles must be present in at least two of the loci involved.
E) There are actually more loci involved than just genes A-E.

Quizplus · Accepted Answer

The height trait is likely also influenced by environmental conditions as well.

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