Pedigree

Genetics as it applies to evolution, molecular biology, and medical aspects.

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kasiaogor
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Pedigree

Post by kasiaogor » Tue Feb 16, 2010 6:40 pm

So, I have another problem with a pedigree. There is an autosomal recessive trait in a family. Father - AA, mother Aa, they have two children one of them is Aa (it is possible) but the other one is aa. And that´s the problem because she cannot inherit a from her father since he is AA. What could be the possible cause of that?? How can it be explained?? (the woman did not sleep with the postman ;P)

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JackBean
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Post by JackBean » Tue Feb 16, 2010 7:15 pm

at least, you could write, what was the solution last time :roll:
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

kasiaogor
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Re: Pedigree

Post by kasiaogor » Wed Feb 17, 2010 6:17 am

I probably will know that next week

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JackBean
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Post by JackBean » Wed Feb 17, 2010 8:29 am

Probably the answer will be analogous.
Maybe some mutation, but you can´t know only from A/a, you would need to see the sequence.

Also, I´ve heard about one phenomenon, I´m not sure, how is it called, where were are actually kind of mix of several different cells (meaning genetically). Doctors found this out once, when some mother was not supposed to be mother of her children based on blood samples. If I remember it, it is caused by some exchange between mother and fetus or something like that...
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

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