genetics - terminology help

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

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curious1234
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genetics - terminology help

Post by curious1234 » Tue Feb 26, 2008 7:59 pm

I'm pretty new to genetics, so the terminology is a bit confusing to me.

If someone says that there is not any evidence for biased segregations, is this saying that independent assortment is not occuring?

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Post by Cat » Tue Feb 26, 2008 10:08 pm

I think you made a mistake in your question. Biased segregation and independent assortment are opposite of each other.
Anyway: Absence of proof is not proof in itself (or however that saying goes).

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Re: genetics - terminology help

Post by curious1234 » Wed Feb 27, 2008 3:04 am

Ok, so to make sure I understand

Biased segregation means that independent assortment does occur?

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MrMistery
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Post by MrMistery » Wed Feb 27, 2008 7:33 am

no, i think it means the exact opposite, that it doesn't occur
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Post by Cat » Wed Feb 27, 2008 5:19 pm

Biased segregation means selective segregation.
Independent assortment means random segregation.
Each term can be used to describe either gene or chromosomes.
You can have biased segregation of 1 gene and independent assortment of others.

As I said before: Absence of proof is not proof in itself (or however that saying goes). You cannot say no evidence means it is not there. Ex. there was no evidence of DNA 1000 years ago, it does not mean that DNA did not exist.

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MrMistery
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Post by MrMistery » Sun Mar 02, 2008 1:21 pm

Tell me about it: we have a cell line in the lab that hasn't been tested for HIV and is labeled "probably safe"(God only knows how they came to that conclusion).
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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