which of the following disease alleles will most likely occur at the highest fre

Question

which of the following disease alleles will most likely occur at the highest frequency?
a. one that provides an advantage to heterozygotes b. a recessive allele that causes a childhood illness c. a dominant allele that causes a childhood illness which of the following disease alleles will most likely occur at the highest frequency?
a. one that provides an advantage to heterozygotes b. a recessive allele that causes a childhood illness c. a dominant allele that causes a childhood illness which of the following disease alleles will most likely occur at the highest frequency?
a. one that provides an advantage to heterozygotes b. a recessive allele that causes a childhood illness c. a dominant allele that causes a childhood illness

Explanation / Answer

Heterozygote advantage:
In nature, some deleterious alleles are still maintained eventhough they cause
abnormal effects in homozygous condition but these alleles provide selective advantage
in heterozygous condition.Hence they are maintained in the population.
Example:
Sickle cell anemia.
If the condition is homozygous, the affected patients may die.
If the condition is heterozygous, the affected patients are resistant to malaria

Option a is correct

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