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Genetics (OCR) watch
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- 20-06-2004 17:03
(Original post by Tanaz)
- 20-06-2004 17:17
im doing the questions in the genetics book and im kinda dont know how to do few of them ..
Describe the harmful effects of inbreeding?
(is this just the inbreeding depression?)
1)It reduces that variation of genes meaning that an environmental event will be more likely to wipe all of them outs
2) It can increase the chances of having two dangerous recessive alles if the parents are related therefor increasing the chance of a genectic defect.
- 20-06-2004 17:24
i was doing that question this morning...the hamrful effects of inbreeding include inbreeding depression - loss of hybrid vigour, growth and fertility, due to accumulation of deleterious alleles, homozygous and most loci. this leads to loss of alleles and therefore genetic diversity.
in response to your post above, a gene bank is needed to preserve genetic diversity and reduce genetic erosion, by maintaining background genes, which could be needed for selective breeding purposes as trends change, and also to cope with changes in the future, for example new diseases, climate change etc.