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4.Principles of Inheritance and Variation
normal
Select the incorrect statement from the following.
A
Galactosemia is an inborn error of metabolism.
B
Small population size results in random genetic drift in a population.
C
Baldness is a sexlimited trait.
D
Linkage is an exception to the principle of independent assortment in heredity.
(AIPMT-2009)
Solution
(c) : Baldness is a sex influenced trait. The $Yy$ (heterozygous yellow) $yy$ (homozygous green) dominance of alleles may differ in heterozygotes of the two sexes. This phenomenon is called “sex influenced dominance”. Gene products of heterozygotes in the two sexes may be influenced differentially by sex hormones.
Standard 12
Biology
