Hypercholesterolemia is a genetic disorder that causes blood cholesterol levels to be elevated. The H allele is incompletely dominant to the h allele, with hh homozygotes having extremely high levels of blood cholesterol. A husband and wife are both heterozygous for hypercholesterolemia. What is the probability that their first child will have normal levels of blood cholesterol?

Question

Biology

Carmen Park

18 June, 06:33

Hypercholesterolemia is a genetic disorder that causes blood cholesterol levels to be elevated. The H allele is incompletely dominant to the h allele, with hh homozygotes having extremely high levels of blood cholesterol. A husband and wife are both heterozygous for hypercholesterolemia. What is the probability that their first child will have normal levels of blood cholesterol?

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Answers (1)

Know the Answer?

Isaac Ellison · Answer 1

1 (100%)

Explanation:

H allele is incompletely dominant to the h allele = Hh (normal levels of blood cholesterol)

hh homozygotes having extremely high levels of blood cholesterol = hh

If Hh * hh

The F1 generation = Hh, Hh, hh, hh

The probability that their first child will have normal levels of blood cholesterol;

= 1/1

= 1 (100%)