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predict one parent is heterozygous for a recessive genetic disorder, and the other parent is homozygous for the dominant allele. determine if their offspring are likely to express the recessive trait. explain

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User ISeeker
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2 Answers

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Final answer:

Offspring are unlikely to express the recessive trait when one parent is heterozygous for a recessive genetic disorder and the other parent is homozygous for the dominant allele.

Step-by-step explanation:

In this case, if one parent is heterozygous for a recessive genetic disorder and the other parent is homozygous for the dominant allele, their offspring are unlikely to express the recessive trait. This is because the dominant allele from the homozygous parent will suppress the expression of the recessive allele. The offspring will inherit one recessive allele from the heterozygous parent and one dominant allele from the homozygous parent, resulting in a dominant phenotype.

answered
User Luis Lavena
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8.0k points
4 votes
None of them are likely to express the recessive trait because they all have a dominate allele in their genotype. 2 of them will be homozygous dominant, but two of them will be heterozygous and carriers for the disease.
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User DrakeMurdoch
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8.7k points

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