chromosomes
[ (kroh-muh-sohmz) ]
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The small bodies in the nucleus of a cell that carry the chemical “instructions” for reproduction of the cell. They consist of strands of DNA wrapped in a double helix around a core of proteins. Each species of plant or animal has a characteristic number of chromosomes. For human beings, for example, it is forty-six.
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notes for chromosomes
In humans, sex is determined by two chromosomes: an X-chromosome, which is female, and a Y-chromosome, which is male. (See sex chromosomes.)
Words nearby chromosomes
chromosomal aberration, chromosome, chromosome band, chromosome map, chromosome number, chromosomes, chromosphere, chromous, chromy, chromyl, chron-
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.