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Diano4ka-milaya [45]
3 years ago
5

Rocks are formed by changes in heat and pressure of hot, watery fluids

Biology
1 answer:
Licemer1 [7]3 years ago
8 0
That's true heat and pressure causes rock forms to change.
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A couple has three children, two without sickle cell anemia and one with sickle cell anemia. The mother has sickle cell anemia a
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Answer:

Explanation:

The sickle cell allele is recessive. Hence, in order for any child of the couple to have sickle cell anemia, such a child will have to inherit an affected allele each from the two parents. This means that both the father and the mother must have affected alleles in their genotypes. In other words, two sickle cell alleles are required for the abnormality to manifest.

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<em>50% of the children would have sickle cell while the remaining 50% would be normal.</em>

<u>Therefore, in order to produce children with sickle cell, the father has to be AS, otherwise, he has to be AA.</u>

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