Principle of Inheritance and VariationEasyBloom L1
Question
Select the incorrect statement from the following:
Options
A.Galactosemia is an inborn error of metabolism
B.Small population size results in random genetic drift in a population
C.Baldness is a sex-limited trait
D.Linkage is an exception to the principle of independent assortment in heredity
Solution
Sol.(c) [Key Concept: Sex-Influenced vs Sex-Limited Traits] The incorrect statement is (c): Baldness is a SEX-INFLUENCED trait (not sex-limited). Sex-influenced traits are autosomal but show different dominance in the two sexes (e.g., baldness allele is dominant in males but recessive in females). Sex-LIMITED traits are expressed in only ONE sex (e.g., milk production, ovarian cysts). Galactosemia IS an inborn error of metabolism (true); small populations DO undergo genetic drift (true); linkage IS an exception to independent assortment (true).
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