DrVirgo
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2. The genotype of the cells of the chorionic villi that comprise the human placenta is?
A ) fetal
B ) maternal
C ) maternal and fetal
D ) paternal
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| mildus
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it should be fetal;
but I don't remember good, I think I read somewhere that father's chromosome (Y) is inactive in order to make it less strange to mother
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| reet
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yes,,its fetal
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| DrVirgo
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Yes, i think i read that its fetal too...
Mildus, I don't understand what you are saying. I don't think Y is ever inactive. Only X is inactive in females. (correct me if i'm wrong.)
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| sturge_weber
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yes its fetal....
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| mildus
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It is fetal.
And other thing I mentioned: I remember that cells of trophoblast inactivate some father's chromosomes in order to make the fetus less strange to mother but I don't remember precisely
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| DrVirgo
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hhmm... interesting.... 
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| dandrof
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it's fetal
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| ManuNastai
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the only part of the placenta which is formed by cells with maternal genotype is the decidua; so everything else (the cytotrophoblast that has passed through the corionic villi and surrounds the outside face of the syncitiotrophoblast, the chorionic villi, the syncitiotrophoblast and the extraembryonic mezoderm have fetal genotype.
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| hanson99
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it is fetal.
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| hollmann
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 defenely fetal ,, i think the formation start in the blastosyto
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| hollmann
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somebody can tell me the funtion of the Ca in the neurotrasmition ??
i think is open the Na canal ..??
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| vanshita
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i go with B maternal please correct me
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| gabydj
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No, it's fetal - Q is in Qbank
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| mona1976
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yeah its fetal
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| lq2006
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A ) fetal
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