Question

Question #65287

Answer 1

The gene for sickle cell anemia is an example of `"pleiotropy"`

Explanation:

Pleiotropy occurs when variation at a single gene locus affects multiple aspects of the phenotype.

For people with an HbS / HBs genotype, medical consequences include

• anemia
• damage to various internal organs including the spleen and
  heart
• "tower" or "bossed skull"
  https://www.mun.ca/biology/scarr/HbS_pleiotropy.html

Here's a diagram of the effects of sickle cell anemia

http://www.showme.com/sh/?h=x0f9uL2