Elements of comet 1894…(Gale April 1)

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Cover Vol.4, No.1 April 2007

Wednesday April 1

Early in mammalian embryogenesis, each female cell chooses one X chromosome for silencing, thus balancing X-linked gene expression between XX females and XY males. This choice is random: the X chromosome inherited from the mother is silenced in 50% of cells and the X chromosome inherited from the father is silenced in the remaining 50% of cells. A sense/antisense pair of non-coding RNAs are nec...

Persian-translation Vol.4, No.1 April 2007