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What genetic disorder can be beneficial in its heterozygous form?
Sickle Cell Anemia, in it's heterozygous form it does not present as the disease and it gives the carrier resistance to malaria.
Heterozygous persons with one sickle cell allele and one normal allele also show resistance to?
Malaria
What is the heterozygous advantage of of people having sickle cell trait in areas where malaria is a major cause cause of death?
the sickle trait possess a resistance to the infection of malaria.
What disease are you immune to if you are heterozygous for sickle cell disease?
malaria
What is the genotype of a man who has sickle cell trait?
rr since sickle cell is a recessive trait.
What is the word for the genetic disorder that causes abnormal hemoglobin is known as?
sickle cell anemia. If you are only heterozygous for this disease it is simply called sickle trait.
People who are heterozygous for sickle cell disease are generally healthy because of what?
true
What is the genotype for sickle cell anemia?
homozygous recessive (rr) & Heterozygous (Rr) homozygous recessive (rr) & Heterozygous (Rr)
How does balancing selection affect the sickle cell allele in central Africa?
The sickle cell allele can be maintained in the central African population, above the frequency of gene mutation (balancing selection), because the heterozygous sickle cell individuals have an advantage in lifespan, in this malaria stricken region, over the homozygous alternatives. Homozygous sickle-sickle individuals die early from the sickle cell disease. Homozygous nonsickle-nonsickle die early from malaria. The heterozygous sickle-nonsickle have a higher survival against malaria and therefore the sickle cell allele is balanced selected.
What is an inherited autosomal recessive disorder of the blood where an individuals red blood cells are sickle shaped rather than disk shaped?
C. Sickle-cell anemia
Individuals heterozygous for sickle-cell anemia appear normal and are resistant to what disease?
malaria
The genetic disorder sickle cell disease is an example of heterozygous dominance?
Yes. Heterozygous dominance offers a way to preserve the mutated allele.
