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Subjected to repression.

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X chromosome inactivation

... transcriptional repression of the X chromosome. The X chromosome of male germ cells is in a condensed chromatin state and is transcriptionally repressed during early spermatogenesis but to my knowledge this is not considered as "X chromosome inactivation". In mammals, X chromosome ...

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by cathbr
Thu Jul 18, 2013 3:56 pm
Forum: Molecular Biology
Topic: X chromosome inactivation
Replies: 1
Views: 2198

Re: Theories - Origin of Life

... Chromosomes or parts of them near the centre of the nucleus are more intensively expressed than those near the outer periphery, which tend to be repressed. (note this is just one very simple strand of knowledge) Now this organisational structure has nothing to do with whether a random mutation ...

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by scottie
Wed Feb 22, 2012 8:12 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1136318

How do Cells "think"...

... have to remember that all the DNA in a cell is the same for all the cells (a liver cell and the toe nail cell), but some cells have genes that are repressed while the others are expressed. If you want to know more about what is in between input and delivering output, I would look at signaling cascades ...

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by kolean
Mon Nov 23, 2009 6:40 pm
Forum: Cell Biology
Topic: How do Cells "think"...
Replies: 7
Views: 8496

promoter, enhancer, regulatory region

... to the promoter and enhancer regions and therefore turn on its expression. Or it could also could be a negative regulation in which the gene is repressed/silenced. This negative regulatory region of DNA could be in the same area as the positive one, and that it can block the transcriptional ...

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by kolean
Sun Nov 22, 2009 4:54 am
Forum: Cell Biology
Topic: promoter, enhancer, regulatory region
Replies: 4
Views: 17014

Re: Few questions about biology

... to be. Now during interphase, when the cell is doing its function, the DNA can be compacted into heterochromatin to keep that part of the DNA repressed and keep it silent. Whle the unbound DNA, euchromatin, is free to be transcribed. 6. Spindles are a general and vague term for me. Microtubules ...

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by kolean
Tue Oct 13, 2009 7:36 pm
Forum: General Discussion
Topic: Few questions about biology
Replies: 8
Views: 10236
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