Snapdragons occur in nature as either green or yellow plants. A green snapdragon is homozygous and has the genotype CC. A yellow snapdragon is heterozygous and has the genotype Cc. Suppose that a gardener crosses two yellow snapdragons, and one-third of the offspring are green and two-thirds of the offspring are yellow.

What type of allele could be responsible for the 2:1 offspring ratio seen when two yellow snapdragons are crossed?

A. dominant allele

B. polymorphic allele

C. recessive lethal allele

D. codominant allele

Question

Biology

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9 May, 14:56

Snapdragons occur in nature as either green or yellow plants. A green snapdragon is homozygous and has the genotype CC. A yellow snapdragon is heterozygous and has the genotype Cc. Suppose that a gardener crosses two yellow snapdragons, and one-third of the offspring are green and two-thirds of the offspring are yellow.

What type of allele could be responsible for the 2:1 offspring ratio seen when two yellow snapdragons are crossed?

A. dominant allele

B. polymorphic allele

C. recessive lethal allele

D. codominant allele

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Answers (1)

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Lyla Carter · Answer 1

Snapdragons occur in nature as either green or yellow plants. A green snapdragon is homozygous and has the genotype CC. A yellow snapdragon is heterozygous and has the genotype Cc. Suppose that a gardener crosses two yellow snapdragons, and one-third of the offspring are green and two-thirds of the offspring are yellow.

What type of allele could be responsible for the 2:1 offspring ratio seen when two yellow snapdragons are crossed?

dominant allele

Explanation:

As a result of two yellow snapdragons crossed, the dominat yellow allele gives the reason why the reult reflects in such a way that there is yellow dominates over green and leads to why yellow has two-third while green has one-third