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In a family where the father and mother had a nose with a hump, 3 children were born, one of whom had a straight nose, and the other two-with a hump. Determine the genotypes of all family members and the probability of having children with the same nose as their parents. (The nose with a hump is the dominant trait)One of the hereditary metabolic diseases is phenylketonuria, caused by disorders of the conversion of the amino acid phenylalanine. As a result of the disease, children quickly develop dementia. The mutant gene is recessive in relation to the normal gene. Determine the risk of having a child with phenylketonuria if both parents are healthy and heterozygous for this trait? |
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