A) Linkage is an exception to the principle or independent assortment in heredity
B) Galactosemia is an inborn error of metabolism
C) Small population size result in random generic drift in a population
D) Baldness is a sex-limited trait
Correct Answer: D
Solution :
Baldness is not a sex-limited trait. It is a sex- influenced trait. Males have higher level of testosterone than females. The gene of baldness is highly influenced by this hormone. The baldness gene has two alleles-one is dominant and one is recessive. Due to high testosterone levels, it behaves as a dominant alleles in males. Linkage is an exception to the principle of independent assortment in heredity. Galactosemia is a hereditary disease that is caused by the lack of a liver enzyme required to digest galactose. Small population size results in random genetic drift in population.
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