Is bisexuality/homosexuality genetic?

Question

For instance, if one or more grandparents were bisexual/homosexual, could their children/grandchildren inherit it?

Answer 1

That's a bit difficult isn't it...
Or are you saying that all the mothers and/or fathers off all the gay adults (because 20 years ago, you still needed the two sexes to get a child!) secretly are gay?
Whoopee! We already have world domination but we never knew!
Good question though...

Answer 2

Yes it is.

An October 2004 scientific research publication stated that scientists at the University of Padua have found that women tend to have more children when they inherit the same genetic factors linked to homosexuality in men. This fertility boost more than compensates for the lack of offspring fathered by gay men, and keeps the “gay” genetic factors in circulation. Mothers of gay men produced an average of 2.7 babies compared with 2.3 born to mothers of straight men. And maternal aunts of gay men had 2.0 babies compared with 1.5 born to the maternal aunts of straight men.

Another study published in Human Genetics in February 2006 examined X chromosome inactivation in mothers of gay sons and mothers whose sons were not gay. Normally, X chromosome inactivation occurs at random: half of the cells in a woman's body will have one X chromosome inactivated, while the other half inactivates the other chromosome. Researchers found that in about a quarter of mothers who had at least two gay sons every single cell in these women inactivated the same X chromosome while only 4 percent of mothers with no gay sons showed this type of extreme skewing.

A Canadian university study published in June of 2006 stated that, although researchers have known for years that a man's likelihood of being gay rises with the number of older biological brothers, that the new study found that the so-called "fraternal birth order effect" persists even if gay men were raised away from their biological families.

A January 2007 report suggested to be gay you need to receive one gay gene from both parents, and that those with only one gay gene have a selective advantage because they are heterosexual but have increased style, male sex drive, charm and seductiveness towards women.

Answer 3

Probably not in that sense. It's more of a gernalized human condition than an inherited trait. There do not seem to be more cases of it in some families, and less in others.

Answer 4

No behavioural science has proved that homosexuality is a behavioural abberation passed on from one person to another. Not genetically but behaviourally. There is always someone who teaches the behaviour to another, often younger, person.

Answer 5

As far as evidenced at this point it does not seem to be an inherited trait, that does not imply that it isn't genetic, it simply indicates that sexual orientation is more complex than one simple gene.

Answer 6

any genetic homosexuality ought to of died out hundreds of years in the past? hmm...are you gay? then why might it count to you? What grade did you get in biology? did you even end intense college or college? if no longer, then do no longer submit your biases on right here waiting to your elite to grant you affirmation that your point of view is real. there's no gene that asserts which you like different men yet is a such element referred to as a "chemical imbalance" that should attraction to ones sexuality extra in direction of one intercourse than the different intercourse. we are unique people who've distinctive fetishes that all of us have got here to settle for yet. interior this society, that's totally no longer ordinary to return on the element of those fetishes because of the fact what's seen as "ideal".

Answer 7

its still up for debate. however while there are many people who are gay and have no one else in the family that is gay, most people (straight or gay) can think of at least one gay family member (in the closet still or not) whether its a cousin, aunt, uncle, or even 2nd cousin.

it is interesting however when you study twins - they have the exact same genes, yet only one of them is gay. lots of scientists now think it has something to do with the way the brain is wired, and the way the connections are made. which is unique in every person and doesnt have anything to do with genes.

Answer 8

i dont think its inherited, it just happens that you were born with it. how can two straight parents give a homosexual gene to a child. sounds cruel

Answer 9

being gay is not passed down by another gay family member. Nobody knows 100% what causes a person to be born gay or not. Born gay is not the same as born with red hair

Answer 10

I believe so,but there also may be other causes.the main thing people must understand is that it is not a choice,but a biological urge,a different chemical makeup,so gays should not be criticized or hated.besides who is to say its wrong anyway.love is good .no matter what sex you prefer