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atroni [7]
3 years ago
8

An individual who displays the disease sickle-cell anemia must haveinherited the deleterious allele from both phenotypically nor

malparents. This individual is therefore
a. heterozygous.
b. homozygous recessive.
c. haplozygous.
d. homozygous dominant.
Social Studies
1 answer:
borishaifa [10]3 years ago
5 0

Answer:

b. homozygous recessive.

Explanation:

The allele for sickle cell is recessive. That is, an individual with the AS genotype is a carrier of the allele but is normal because the A alleleis dominant over the S allele. For an individual to suffer from sickle cell anemia, it is a must that the parents must be carriers of the S allele. Thus the individual has a genotype which is SS which is homozygous recessive.

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