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snow_lady [41]
3 years ago
7

In sickle-cell disease, an allele produces red blood cells with an abnormal shape, which affects many other

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0

Answer:

Pleiotropy

Explanation:

The pleiotropic is a type of genetic behaviour which influence and affect more than one trait. Sickle cell anemia disease is a type of pleiotropism. In sickle cell anaemia patients, haemoglobin A is entirely replaced with haemoglobin S. Such patients have the genotype HBs HBs. Heterozygotes who carry the sickle cell gene HBa HBs are said to have a condition called sickle cell trait thus the expression of two different genotypes by one single gene indicates pleiotropism.

Haemoglobin S crystallizes when oxygen concentration is low in capillaries making the red blood cells to assume a crescent or sickle shape. Such cells transport oxygen very poorly leading to anaemia.

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