Biology, asked by mansimrankaur1655, 3 months ago

If two parents who did not have Tay-Sachs gave birth to a baby with Tay- Sachs, what are their genotypes?

Answers

Answered by nikita6777
0

Answer:

the genotype of both the parents are heterozygous .

Explanation:

tay sachs disease is inherited in an autosomal recessive manner.

in case of the both the parents are not having the disease but the progeny is affected (two recessive alleles..ex: aa) then both the parents show be heterozygous. {having one recessive and one dominant allele(Aa)}

Aa × Aa

= AA (1/4)

Aa(1/2)

aa(1/4)

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