inbreeding in animals

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

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martyn
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inbreeding in animals

Post by martyn » Fri Aug 17, 2007 6:13 pm

hi guys. quik question.

What are the disadvantages of inbreeding?

cheers for any help

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mith
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Post by mith » Fri Aug 17, 2007 7:46 pm

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Post by Darby » Sat Aug 18, 2007 5:41 pm

The chances of combining unique, bad, recessive alleles is increased when members of the family carrying those alleles breed. The alleles are called lethals, lethal alleles, or lethal genes.

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Post by martyn » Mon Aug 20, 2007 7:16 am

Is breeding first generation offspring with each other still bad then ?

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MrMistery
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Post by MrMistery » Mon Aug 20, 2007 11:14 am

Why wouldn't it be?
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mith
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Post by mith » Mon Aug 20, 2007 2:42 pm

I'm sure you could calculate how bad it was if you knew the genotypes ahead of time. So for example if your specimens were both heterozygotes(for the genes in question anyway) you'd see the effects, but if they're both homozygotes there won't be any differences. Obviously that's simplifying it a tad.
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MrMistery
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Post by MrMistery » Mon Aug 20, 2007 5:25 pm

falls on the rule of big numbers i think. Considering how many genes an organism usually has, you can say almost for sure(by sheer probability) that it will be bad.
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