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The Genetic Possibilities: Can AA and SS Parents Have a Child with SS?

by Thomasina Oseye
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Can AA and SS Parents Have a Child with SS

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One of the intriguing questions in genetics is whether two parents with specific genotypes can give birth to a child with a different genotype. In this case, we are considering whether parents with the genotypes AA and SS can have a child with the genotype SS.

The answer to this question is no.

When it comes to genetic inheritance, each parent passes down one gene to their child. In this scenario, the parent with the genotype AA will pass down an A gene, while the parent with the genotype SS will pass down an S gene.

Based on the laws of genetics, the child will receive one gene from each parent, resulting in the genotype AS. This is the only possible combination when parents have the genotypes AA and SS.

Therefore, it is not possible for parents with the genotypes AA and SS to give birth to a child with the genotype SS. The genetic makeup of the parents restricts the possibilities, and SS is not one of them.

Now, let’s consider another question: Can parents with the genotypes AA and SS give birth to three children, none of whom have the genotype SS?

Yes, this is possible.

As mentioned earlier, when parents with the genotypes AA and SS have a child, the child will have the genotype AS. When this AS child grows up and has children of their own, they will pass down either an A or an S gene to each of their children.

Since the AS child can pass down either the A or the S gene, there are three possible combinations for each child: AA, AS, or SS.

However, since SS is not possible in this scenario, the three possible combinations are AA, AS, and AA.

Therefore, parents with the genotypes AA and SS can indeed give birth to three children, none of whom have the genotype SS.

The genetic possibilities are fascinating and can vary depending on the specific genotypes of the parents.

This article was updated 5 months ago

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