Red hair is a recessive trait; non-red hair is dominant. suppose two people with non-red hair have a red-haired child. what are the genotypes of each parent (use hh, hh, or hh)? what was the probability of them having a red-haired child? what are all the possible genotypes of their children?

The genotype of the parents must be Hh. Since they had a kid with a recessive trait with 2 parents who have the dominant trait, they both must carry the recessive trait. The probability was 1/4 or 25%. They possible genotypes are HH,Hh,hH,hh.

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blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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