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Problem: Imagine a plant with two incompletely-dominant loci. CW (white flowers) is incompletely dominant to CR (red flowers). Heterozygous have pink flowers. HS (short) is incompletely dominant to HT (tall. Heterozygotes are of medium height.A medium height pink plant is crossed with a mystery plant (i.e. its genotype and phenotype aren't revealed to you). 1/4 of the offspring are white with medium height; 1/4 are white with tall height; 1/4 are pink with medium height; and 1/4 are pink with tall height. What are the genotypes of each parent?

FREE Expert Solution

In summary, the phenotype of the offspring can be summarized as follows:

A. by color: 50% white, 50% pink

B. by height: 50% medium height, 50% tall

One of the parents is a medium height, pink plant. Since these loci exhibit incomplete dominance, it can simply be deduced that its genotype is CWCRHTHS.


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Problem Details

Imagine a plant with two incompletely-dominant loci. CW (white flowers) is incompletely dominant to CR (red flowers). Heterozygous have pink flowers. HS (short) is incompletely dominant to HT (tall. Heterozygotes are of medium height.

A medium height pink plant is crossed with a mystery plant (i.e. its genotype and phenotype aren't revealed to you). 1/4 of the offspring are white with medium height; 1/4 are white with tall height; 1/4 are pink with medium height; and 1/4 are pink with tall height. 

What are the genotypes of each parent?

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