Anthonyc123
01.04.2020 •
Biology
Which of the following statement best represents the approach of the scientists quoted in this article to the ice memory project
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Ответ:
The mother must be heterozygous.
Explanation:
t=Tay-Sachs trait
T=Normal trait
Parent genotype combinations:
Tt x Tt
Possible genotypes:
| T | t
T | TT | Tt
t | Tt | tt
Since it is a recessive trait there must be 2 of the recessive alleles for the trait to show. This means neither of the parents can be totally normal(TT).
Since both parents are considered normal the both must be heterozygous to be able to produce an child with Tay-Sachs.