Question

A Punnett is a means to determine the genetic inheritance of offspring if the genotypes of both parents are known. Using Punnett squares answer the questions about the following scenarios. In order to properly answer some of the questions more than 1 Punnett square might be needed. With every Punnett square provide a key for your alleles.

1. The condition of sickle cell anemia is recessive and only the homozygous recessive individuals are adversely affected. Interestingly, heterozygous individuals have increased resistance to Malaria which is caused by a Plasmodium parasite that infects red blood cells. A heterozygous individual has red blood cells that are minimally affected but are altered enough so that Plasmodium cannot infect the cells. This is one reason why this allele persists in the population – in the heterozygous state it gives the individual an advantage for survival in some environments.

Veronica, who has the sickle cell condition, and Mason who does not have the condition have a child. They are worried about the having a child with sickle cell anemia and malaria because they are moving to a part of Africa where the Plasmodium is common. Who in this family should be worried about sickle cell anemia and contracting malaria?

Answer 1

Sickle cell anaemia is the autosomal recessive disorder that means the genes for the sickle cell anaemia is present on the autosome and it expresses when both genes of sickle cell anaemia is present in the pair . Veranica has sickle cell anaemia. That means veranica has both the recessive gene for the sickle cell anaemia that is the homozygous condition . Mason don't have sickle cell anaemia that means masons have either the homozygous dominant gene or herozygous dominant gene . There are 2 possibilities. Thanking you

Have a beautiful day ?✨

Please Hit a Thumbs up ??