Predict the parental genotypes for individuals expressing the dominant or the recessive trait. What sex generally expresses the recessive trait? Why?© BrainMass Inc. brainmass.com December 20, 2018, 3:43 am ad1c9bdddf
Sex-linked traits are those carried on either the X or Y chromosome. Because females have two X chromosomes and males have XY the frequency of the trait is different from autosomal traits and is influenced by the sex of the organism.
For example, let's say a trait is dominant (A) and X-linked (this means that an individual only needs to inherit one copy of the dominant allele to express the trait).
XAXa x XaY
Xa XAXa XaXa
Y XAY ...
Detailed explanation of how to predict if a trait is dominant, recessive, and/or sex-linked. Web references provided.