Y linkage
From Wikipedia, the free encyclopedia
In mammals, Y-linkage refers to when a phenotypic trait is determined by an allele (or gene) on the Y chromosome.
The Y-chromosome is small and does not contain many genes, therefore few traits are Y-linked, and so Y-linked diseases are rare. As only males have a Y chromosome, the genes are simply passed from father to son, with no interchromosomal genetic recombination.
