2006-11-10 22:27:07 · 8 answers · asked by gel 1 in Pregnancy & Parenting ➔ Newborn & Baby
priamary reson ITS NASTY
second to close in genes so the kids have a really high chance of becoming mentally retared
2006-11-11 02:41:36 · answer #1 · answered by Big Daddy R 7 · 0⤊ 0⤋
because the genetic material is so close the babies usually have birth defects or some form of deformities.
Inbreeding may result in a far higher expression of deleterious genes within a population than would normally be expected. As a result inbred individuals are more likely to show physical and health defects, including:
* reduced fertility both in litter size and in sperm viability
* increased congenital disorders
* fluctuating facial asymmetry
* lower birth rate
* higher infant mortality
* slower growth rate
* smaller adult size
* loss of immune system function.
The reduced genetic diversity that results from inbreeding may mean a species may not be able to adapt to changes in environmental conditions. Where a species becomes endangered, the population may fall below a minimum whereby the forced interbreeding between the remaining animals will result in extinction.
It is possible for a population to become inbred without inheriting deleterious traits. For instance the cheetah is a highly inbred species, resulting from a population bottleneck. Many island species are also highly inbred. This is more likely in a population where natural selection is acting.
2006-11-11 06:31:03 · answer #2 · answered by paranoidegotist 2 · 4⤊ 0⤋
They can, it is just not at all advisable, as the odds of lethal gene reinforcement are MUCH higher with close relatives.
When a brother and sister breed, there is about a 25% chance of the baby being born either dead or severely handicapped/deformed, due to gene reinforcement.
25% may not sound very high, but that's one in four. For non-related couples, the odds are far less, around 2 or 3 percent.
2006-11-11 06:31:29 · answer #3 · answered by j3nny3lf 5 · 1⤊ 1⤋
Because there would be a disasterous combination of DNA and the strong possibility of severe birth defects to the offspring.
2006-11-11 06:35:14 · answer #4 · answered by rosey 7 · 0⤊ 0⤋
cause they have almost the same kind of genes and chromosomes,due to which there are more chances of some deformalities formed in babies born in such couples.
2006-11-11 06:56:22 · answer #5 · answered by jassi 2 · 0⤊ 0⤋
All those previous answers have been correct - but Frosty, are you trying to let the world know youv'e been doing something unwise AND Illegal ?
2006-11-11 06:40:09 · answer #6 · answered by Rick Harley 3 · 0⤊ 0⤋
Similar chromosomes cause genetic defects, or so it was believed until recently.
2006-11-11 06:31:14 · answer #7 · answered by noir 3 · 1⤊ 0⤋
you might end up with six toes
2006-11-11 06:34:56 · answer #8 · answered by you remind me of the babe.. 3 · 0⤊ 0⤋