Sex linkage - Wikipedia - Example linked sex trait
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Chromosomes Females have two X chromosomes, and males have an X and a Y. The Y chromosome has few genes, but the X chromosome has more than 1, Well-known. While sex linkage is not the same as genetic linkage, sex-linked genes can be genetically linked (see bottom Well-known examples in people include genes that control color blindness and male pattern baldness. These are sex-linked traits.