First slide

Pleiotropy

Question

A Pleiotropic gene

Easy

A

controls a trait only in combination with another gene
B

controls multiple traits in an individual
C

is expressed only in primitive plants
D

is a gene evolved during Pliocene

Solution

A pleiotropic gene controls multiple traits in an individual.
The underlying mechanism of pleiotropy in most cases is the effect of a gene on metabolic pathways which contribute towards different phenotypes. An example of this is the disease phenylketonuria, which occurs in humans. The disease is caused by mutation in the gene that codes for the enzyme phenyl alanine hydroxylase (single gene mutation). This manifests itself through phenotypic expression characterised by mental retardation and a reduction in hair and skin pigmentation.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App