Go to MSN Homeencarta®
HomeEncyclopediaDictionaryAtlasK-12 SuccessCollege & Grad SchoolDegrees & TrainingQuizzesMore
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
WYSIWYG
wyvern
X (1)
X (2)
x (1)
x (2)
x-axis
X-certificate
X-chromosome
x-coordinate
x-div.
x-height
X-inactivation
x out
X-radiation
X-rated
X-ray
Click to move down the list of words
Print Preview
See pronunciation key
Search for "X-chromo..." in all of MSN Encarta
E-mail this entry
Blog about this entry on MSN Spaces
Download the MSN Encarta Right-Click Dictionary

X-chromosome
X-chro·mo·some (plural X-chromosomes)


noun 
Definition:
 
sex chromosome: a chromosome present in both sexes that plays a role in determining the sex of an individual. Female mammals carry two X chromosomes and males carry one.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement

Also on Encarta
• 10 tips for building your English vocabulary
• Alternatives to the M.B.A.
• GPS for students
• Saving for college
• Presidential Myths Quiz
• Coffee break: Recharge your brain
Englishtown: Learn English online
Our Partners
• ApplyWise Online College Admissions Counseling
• The Princeton Review
• Tutor.com: Live Help When You Get Stuck
Also on MSN
• "Brink": cutting-edge scientific discoveries on the Science Channel
• MSN Shopping: Best books for the season
• MSN Careers: Nail that job interview
• Today's news on MSNBC
Encarta Message Boards (© Rubberball/Jupiterimages)
MSN Shopping
Encarta RSS Feeds
© 2008 Microsoft