Americans are affected with sickle cell anaemia which mostly
affects black people.
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Hi,
Glutamate is replaced by valine in sickle cell anaemia
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Malaria is common in topical ad subtropical zones. The malaria
has selected the people with sickle cell anaemia. Although person
with sickle cell anemia can have malaria, the carrier, or the
person with sickle cell trait is resistant to malaria.
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evolutionary advantage means that if you have to types of sickle
cell anaemia and one is resistant to a drug the the other one is
not then the one that is not resistant dies off and the sickle cell
anaemia that is resistant becomes dominant and that is why sickle
cell anaemia is still so widespread in Africa because the strain
that is widespread in Africa is resistant is anti-biotics.
Adaptations result from interactions between organisms and their .
The Hardy-Weinberg principle states that in a population do not change unless outside factors affect the gene pool
For sickle-cell disease assume S is the dominant allele and s the recessive allele Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS)
According to the theory of today and acirc and 128 and 153s organisms evolved from past organisms.