Sex Chromosome Definition

noun
A sex-determining chromosome in the germ cells of most animals and a few plants: in most animals, including human beings, all the eggs carry an X chromosome and the spermatozoa either an X or a Y chromosome, and an egg receiving an X chromosome at fertilization will develop into a female (XX) while one receiving a Y will develop into a male (XY)
Webster's New World

Other Word Forms of Sex Chromosome

Noun

Singular:
sex chromosome
Plural:
sex-chromosomes

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sex chromosome