Can selective breeding lead to extinction? Watch

Tj789
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Is it because it reduces genetic diversity, and variation so they cant evolve and if one gets struck with a disease as theres no variation they all die?
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veni_vidi_vasi
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(Original post by Tj789)
Is it because it reduces genetic diversity, and variation so they cant evolve and if one gets struck with a disease as theres no variation they all die?
It's because genetic diversity is reduced. It takes ages to mutate new alleles and for natural selection to occur, so if there is too little variation then yeah, if they get struck down by a contagious, deadly disease they are more likely than not going to all die.

Unless of course two of them just happen to have the right allele so the body automatically makes the right antibodies. Of course, that is quite unlikely, but it could happen.

So yes, you're right.
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