👉 The term "isosomic" in the context of genetics refers to a situation where two individuals have one set of chromosomes, but their genetic makeup (i.e., sex) is different. This can occur when a couple has only one parent with an X chromosome and another parent with a Y chromosome. For example, if a man has a single X chromosome and a woman has a single Y chromosome, they would be classified as "isosomic." If both parents have the same number of chromosomes (both