pedigree

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

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pedigree

Post by jessica » Thu Dec 30, 2004 11:43 pm

what is a pedigree and how do you read them

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biostudent84
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Post by biostudent84 » Tue Jan 04, 2005 2:39 am

A pedigree is the scientific word for a family tree. If you need help learning how to read it, you should be able to find a tutorial at http://www.geaneology.com

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Inuyasha
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hmm.

Post by Inuyasha » Tue Jan 04, 2005 1:07 pm

I wonder... aren't pedigrees just for animals besides humans. I have never heard it used when talking about a human family tree.
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Post by biostudent84 » Wed Jan 05, 2005 1:08 am

No, they are identical. The difference in names is because humans feel uncomfortably referring to their reproduction as "breeding," and we rarely think of any other organism (pedigrees can be written for more than just animals) as belonging to a "family."

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Post by ERS » Wed Jan 05, 2005 1:53 am

the field of genetic counseling relies heavily upon pedigrees in order to advise families as to their chances of inheritance of certain disorders etc.

Fascinating field.

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Post by biostudent84 » Wed Jan 05, 2005 1:54 am

The Amish are known to have some of the most extensive pedigrees known.

Their culture keeps them from marrying outside the religion, so they do this to minimize the risk of inbreeding.

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Post by Cyranian » Wed Jan 05, 2005 4:30 am

People of royal blood too, then? And also "big" families? In some cultures, parents want their offsprings to carry the name and "purity" of their tree.
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Post by biostudent84 » Wed Jan 05, 2005 5:05 am

Yes, Royal Houses ususally keep documented pedigrees...but none so extensive as the Amish. I was able to see one once...it covered an entire wall, hahaha

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Post by Antje » Wed Jan 19, 2005 3:43 am

isn't that why there were so many birth defects in those families? :?
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Post by biostudent84 » Wed Jan 19, 2005 6:32 am

No, it's how they can keep there gene lines "pure" while limiting those defects as much as possible.

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Post by moosyman123 » Tue Feb 15, 2005 1:30 am

but how can they limit them? wouldn't reproducing within a family naturally cause defects?

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Post by RobJim » Sat Feb 19, 2005 4:36 am

I'd imagine they'd avoid having people with hemophilia, or who are direct descendents of such people within a few generations, from marrying each other, etc.
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