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7 Terms
what is chromosome painting
chromosome labeling techniques that uses chromosome specific DNA probes each labeled with different color (flurochrome) for hybridization with a chromosome completement
what is SKY and FISH
spectral karyotyping
fluorescence in situ hybridization
what is dosage compensation
regulates X linked genes such that their activities are equal in males and females
in mammals this results in random inactivation of one X chromosome in females
X inactivation
what is the single active X principle hypothesis
after the very early stage embryo, the female body will randomly inactivate one of its X chromosomes in each cell
makes sure there is not too many X gene related products
what is the Barr body
a darkly stained body found in the interphase nucleus of certain cells in female mammals
it is the condensed inactived X chromosome
do different types of tissue undergo X inactivation at the same or different times
different
is the X chromosome that gets inactivated standardized
no