X-linked genes in humans are easier to study than autosomal genes because
A) recombination frequencies are lower.
B) hemizygosity in males allows the effects of genotypic pairings to be observed.
C) Suitable pedigrees are easily available.
D) they do not have as high a recombination rate.
E) there are fewer genes to deal with.

Question

Quizplus · Accepted Answer

Hemizygosity in males (having only one X chromosome) allows the effects of X-linked genes to be observed directly, as there is no second allele to mask the expression of recessive alleles.

X-Linked Genes in Humans Are Easier to Study Than Autosomal