human embryology

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r.v.mugesh
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human embryology

Post by r.v.mugesh » Sat Mar 31, 2007 11:14 am

how mother's blood group is different from baby's blood group even though
baby develope's 10 months in mother's womb ?

please give me exact answer[/quote]

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Revenged
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Re: human embryology

Post by Revenged » Sat Mar 31, 2007 12:38 pm

r.v.mugesh wrote:how mother's blood group is different from baby's blood group even though
baby develope's 10 months in mother's womb ?

please give me exact answer
[/quote]

Standard pregnancy is 9 months...

And materal blood and foetal blood don't mix - the placenta prevents the mixing of blood...

You should easily be able to find out about blood group inheritence yourself..

Darby
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Post by Darby » Sat Mar 31, 2007 5:32 pm

You could ask the same thing about any aspect of the baby - why doesn't it have the same hair color as the mother? The answers all come down to, they are genetically different. The baby has half of Mom's alleles and half of Dad's.

There are some mammals, though, where mother and fetus must have the same blood features, since their blood mixes in the placenta (I think this is true of rabbits...).

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