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sex chromosomes

  1. The two chromosomes in each body cell of a living thing that determine what sex it is.


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Notes

As with other pairs of chromosomes, one of the sex chromosomes is contributed by each parent; they are of two types, X and Y. The mother supplies only an X-chromosome, but the father can transmit both the X- and the Y-chromosome. At fertilization , if the father's sperm is also carrying an X-chromosome, the child will be female. If the father's sperm is carrying a Y-chromosome, the child will be male.
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Example Sentences

These observations on sex-linked heredity confirm the idea that the sex chromosomes determine the sex.

Following Wilson's nomenclature, we speak of both X and Y as sex chromosomes.

The daughter gets one of her sex chromosomes from her mother and the other from her father.

We spoke a moment ago of hereditary traits whose determiners are bound up in the sex chromosomes.

Normal color vision is hereditary and the determiners which establish it are in the sex chromosomes.

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