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Share Transcript Sex linked genes are carried on the X and Y chromosomes, also known as the sex chromosomes. If a gene is carried on the Y chromosome, only men can inherit it. Recessive genes carried on the X chromosome are always expressed for men, who only have one X chromosome, but must be homozygous to be expressed in women. Now sex linked genes are those genes that are found on the x chromosome.
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Sex linkage review (article) | Sex linkage | Khan Academy

Mechanisms[ edit ] All animals have a set of DNA coding for genes present on chromosomes. In humans, most mammals, and some other species, two of the chromosomes , called the X chromosome and Y chromosome , code for sex. In these species, one or more genes are present on their Y chromosome that determine maleness. In this process, an X chromosome and a Y chromosome act to determine the sex of offspring, often due to genes located on the Y chromosome that code for maleness. Offspring have two sex chromosomes: an offspring with two X chromosomes will develop female characteristics, and an offspring with an X and a Y chromosome will develop male characteristics.
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