| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| Y-chromosome |
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| SYLLABICATION: | Y-chro·mo·some |
| PRONUNCIATION: | w  kr m -sm |
| VARIANT FORMS: | or Y chromosome |
| NOUN: | The sex chromosome associated with male characteristics in mammals, not occurring in females and occurring with one X-chromosome in the male sex-chromosome pair.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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