Question

what do you mean by pleiotropy? .​

Answer 1

✦✧ANSWER✦✧

Pleiotropy occurs when one gene will code and control the phenotype or expression of several different and unrelated traits. ... For example, phenylketonuria is a disease caused by pleiotropy. Sickle cell anemia is also a disease caused by pleiotropy.

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Answer 2

$\huge\mathtt\red{Pleiotropy}$

$\longrightarrow$ It is the phenomenon in which a single gene exhibits or controls multiple phenotypic expressions.

$\longrightarrow$ The pleiotropic gene affects the metabolic pathways, resulting in different phenotypes.

$\longrightarrow$ Forexample, phenylketonuria is caused by mutation in the gene coding for the enzyme phenylalanine hydroxylase. The affected individuals show mental retardation as well as reduction in hair and skin pigmentation.

$\longrightarrow$ In Drosophila, gene for wing size influences nature of balancers, colour of eye, dorsal bristles, fertility and longivity.