sex chromosome
noun Genetics.
a chromosome, differing in shape or function from other chromosomes, that determines the sex of an individual.
Words nearby sex chromosome
sex assignment, sex cell, sex cells, sex change, sex chromatin, sex chromosome, sex chromosome imbalance, sex chromosomes, sex crime, sex determination, sex factor
Origin of sex chromosome
First recorded in 1910–15
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for sex chromosomes
sex chromosome
noun
either of the chromosomes determining the sex of animalsSee also X-chromosome, Y-chromosome
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for sex chromosomes
sex chromosome
n.
Either of a pair of chromosomes, usually designated X or Y, that combine to determine the sex and sex-linked characteristics of an individual, with XX resulting in a female and XY in a male.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for sex chromosomes
sex chromosome
Either of a pair of chromosomes, usually called X and Y, that in combination determine the sex of an individual in many animals and in some plants. In mammals, XX results in a female and XY in a male, while the opposite is true in birds (where the designations ZW for female and ZZ for male are often used). Sex chromosomes carry the genes that control the development of reproductive organs and secondary sex characteristics. In some organisms, sex is determined by environmental influences. See also X-chromosome Y-chromosome.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for sex chromosomes
sex chromosomes
The two chromosomes in each body cell of a living thing that determine what sex it is.
notes for sex chromosomes
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.
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.