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They can. The reason to avoid it is many fold. The strongest argument against is is that it increases the risk to the child for serious birth defects by 50%.
Having a child with birth defects is very hard on all persons involved. SO much worse if it was an AVOIDABLE risk.
Siblings not having sex is the best and safest for everybody, parents, children, and society. It's not a relationship that is healthy for anyone. Marriage is hard enough as it is. So is child raising. An non sexual relationship with siblings is so much better for all.
Incest is generally taboo in most cultures and is illegal in many places. Inbreeding can increase the risk of genetic disorders and health problems in offspring. It is important to avoid mating close relatives in order to maintain genetic diversity and overall health of future generations.
1) it is Illegal and people can go to jail
2) The babies have a very high risk of being deformed(missing parts) or mentally damaged
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Does John Oxley have brothers and sisters?
yes he did 4 brothers andd 5 sisters ask another question
Did Alexander Fleming have brothers and sisters?
Yes, Alexander Fleming had four siblings - two brothers and two sisters.
Who are the names of zeus' brothers and sisters?
Zeus has 2 brothers Hades and Poseidon and he has other "kids"
Did Ernest Shackleton have a twin?
No he only had brothers and sisters, no twin
Did Alexander Fleming have any brothers or sisters and what was there names?
Yes, he had several sisters, brothers, and half-brothers and sisters. His father, Hugh Fleming, married Grace Sterling and Grace was his mother. Seven children in all, Including Jane Fleming, Richard Fleming, and also his older brother Hugh Fleming.
How do you get the brothers and sisters hamster to not mate?
separate them
How many sisters and brothers did flojo have?
None Mate
Do parakeets mate with their brothers and sisters?
yes withouth a doubt
Do geese mate with their brothers and sisters?
Yes they do. They don't know the difference. Refer to link below.
How old do brother and sister cats mate?
Brothers and sisters, of any species of animal, cannot breed.
How many sisters and brothers did James Madison have?
He had 11 brothers and sisters.
Can brother and sister mate if there are from diffrenece parents?
If they are from different parents then they are not called brothers or sisters, but if they are from different parents then I suggest it's not allowed.
I have as many brothers as sisters but each of my sisters has only half as many sisters as brothers How many brothers and sisters are there in your family?
There are 4 brothers and 3 sister's all up. Assume your one of the brothers - hence you have 3 brothers and 3 sisters. However any one of your sisters, would have 4 brothers and 2 sisters.
Does Jaqueline Wilson have any brothers or sisters?
no she has no brothers or sisters.
Did t.s.eliot had brothers or sisters?
yes, 7 brothers and sisters
Did vangogh have brothers or sisters?
he had 2 brothers and 3 sisters
Did ella Fitzgerald have brothers and sisters?
She had 12 brothers and sisters
