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Either of a pair of chromosomes in diploid cells, or a single chromosome in haploid cells, carrying genes that determine the sex and sex-linked characteristics of an organism. Most mammals, including humans, have one pair of sex chromosomes in diploid cells, designated XX in females and XY in males.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a chromosome that determines the sex of an individual.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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, with XX resulting in a female and XY in a male. Sex chromosomes carry the genes that control the development of reproductive organs and secondary sex characteristics.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||sex chromosome - (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes"|
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
X chromosome - the sex chromosome that is present in both sexes: singly in males and doubly in females; "human females normally have two X chromosomes"
XX - (genetics) normal complement of sex chromosomes in a female
XXX - (genetics) abnormal complement of three X chromosomes in a female
XXY - (genetics) abnormal complement of sex hormones in a male resulting in Klinefelter's syndrome
XY - (genetics) normal complement of sex hormones in a male
XYY - (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes
Y chromosome - the sex chromosome that is carried by men; "human males normally have one X chromosome and one Y chromosome"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.