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Multi-word Results
sex chromosome |
either of two sex-determining chromosomes, designated X and Y, in the reproductive cells of human beings, most animals, and some plants. |
X chromosome |
the sex chromosome that occurs paired in females and singly in males, and is responsible for female sex characteristics. (Cf. Y chromosome.) |
Y chromosome |
a sex chromosome that occurs only in males, paired with an X chromosome, and is responsible for male sex characteristics. (Cf. X chromosome.) |
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