Lyonization: Difference between revisions
Jump to navigation
Jump to search
Created page with " Lyonization occurs whereby only a single X chromosome is left active in the nucleus of a cell as a result of dosage compensation. So, in f..." |
No edit summary |
||
| Line 1: | Line 1: | ||
Lyonization occurs whereby only a single [[X chromosome|X chromosome]] is left active in the nucleus of a cell as a result of [[Dosage Compensation Mechanism|dosage compensation]]. So, in females (posess 2 X chromosomes) only X chromosome is active in any one cell at a time. | |||
References | Which X chromosome becomes inactive is entirely random, and not all cells will have the same inactive X chromosome.<ref>http://nfed.org/uploads/Lyonization.pdf</ref><span style="line-height: 1.5em;"> During development, one of the X chromosomes is randomly made inactive, and so the progeny cells also have the same X chromosome inactive. As a result of this, defferent </span>[[Alleles|alleles]] <span style="line-height: 1.5em;">that are carried on the X chromosome are expressed in different areas of the female body.</span> | ||
=== References === | |||
<references /> | <references /> | ||
Revision as of 23:25, 26 November 2014
Lyonization occurs whereby only a single X chromosome is left active in the nucleus of a cell as a result of dosage compensation. So, in females (posess 2 X chromosomes) only X chromosome is active in any one cell at a time.
Which X chromosome becomes inactive is entirely random, and not all cells will have the same inactive X chromosome.[1] During development, one of the X chromosomes is randomly made inactive, and so the progeny cells also have the same X chromosome inactive. As a result of this, defferent alleles that are carried on the X chromosome are expressed in different areas of the female body.
References