A dihybrid cross is a breeding experiment between P generation parental generation organisms that differ in two traits. The individuals in this type of cross are homozygous for a specific trait or they share one trait. Traits are characteristics that are determined by segments of DNA called genes. Diploid organisms inherit two alleles for each gene. An allele is an alternative version of gene expression inherited one from each parent during sexual reproduction.
You'd have to be more specific about the genotypes involved to set up the Punnet square correctly. I usually never do dihybrid crosses on sex-linked genes traits determined by the alleles on the X-chromosome. What I do is to consider the case of male progeny and female progeny. If the offspring is a male, then the sex-linked trait will be present only if the mother transfers an X chromosome with the trait.
Inheritance: Sex Linkage, Dihybrid Inheritance, Epistasis
In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? White eyes are X-linked, recessive. Tutorial Genotypes and phenotypes of parents The female parent must be homozygous because she has the recessive white-eyed phonotype. The male parent is hemizygous, red-eyed.
What are the chances that you were born a boy or a girl? What does that really mean? Let's use a penny as a model for gender selection.