Quote:
Originally Posted by C.A.
The different traits, alleles, found in genes have different levels of dominance. To decide a trait for the individual, you have to pair up 2 alleles from the parents.
If one allele is dominant, e.g. black hair, the other is recessive, e.g. red hair, the child will have black hair.
If both are the same allele, they will have simply have the trait which both alleles carry.
So in order to be a rare red head, you need parents who both have the recessive red hair allele in their genes.
Most genetic mutations and defects are recessive genes. If your family has a rare defective allele in the genes, you would not want to inbreed, you might bring out that rare defect.
In order to reduce the chance of bringing out such defects, variation of genes is important.
Variation of genes will likely bring dominant genes to the top and make recessive genes even more rare. This is why recessive yet appealing traits like red heads are becoming an endangered hair colour.
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What he said, but I would like to add something :
A recessive or dominant gene is judged by the scientific community, but not exactly all said dominant genes are so called good. For example : good looking facial features are a mix of dominant genes and recessive genes, as the overall look is a combination of the shape of the nose, size of the cheeks, colour of eyes,
cat-ears in females, etc. If we take all the termed dominant genes we would create a hideous looking genius.
Quote:
Originally Posted by milan kyuubi
But what if a child prodeced by inbreeding have child with someone with fresh genes, would there children suffer the same consequences as the parent?
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Eh, I need you to define fresh genes. Sorry.
In-breeding may be convenient (why go all the way out and spend lots of money on a female schoolmate, when you can just do your cousin if your culture doesn't forbid?), but it is the later generation that will suffer due to the genetic heritage, and higher reoccurence of defective or dysfunctional genes.
Think of the next generation. Your financial sacrifice will be remembered if your descendant is intelligent enough.
