Tag: pleiotropy

Questions Related to pleiotropy

Pleiotropic effect is found in

pleiotropy genetics zoology

  1. Human skin colour

  2. Night blindness

  3. Haemophilia

  4. Sickle cell anaemia

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Correct Option: D
Explanation:

The ability of a gene to have a multiple phenotypic effects is known as pleiotrophy and the gene is called Pleiotropic gene and the inheritance is called Pleiotropic inheritance.

eg:Sickel cell anaemia

So, the correct option is ‘sickle cell anaemia’.

A pleiotropic gene is

pleiotropy genetics zoology

  1. $I^A$

  2. $Hb^S$

  3. $Hb^A$

  4. $I^B$.

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Correct Option: B
Explanation:

The gene having multiple phenotypic effects is called pleiotropic genes. Eg: Sickel cell anaemia. This is caused by a gene HbS. When it is a homozygous condition, sickle cell anaemia occurs or if it is in the homozygous condition, act as a carrier.

So, the correct option is 'HbS’