Is Twin "B" Gay? ?

Both 'B's' would be statistically more likely to be gay or alcoholic respectively.

In the case of the gay twins, different studies have shown different levels of increased likelihood, but it is definitely more likely.

In the case of the alcoholism, twin 'B' is smart not to drink any alcohol. There is definitely a genetic propensity, it's rampant in my family and my partner's family. But until you start drinking, you are not an alcoholic. It is a condition that develops over time. There is some belief that there are two types of alcholics. A 'Type A' alcohlic, once he/she ever takes a drink, will likely become an alcoholic unless there is some intervention. Also, you can stop drinking and still be an alcoholic, because you are never really 'cured.' I know this from personal experience.

Not necessarily in either case. If they are identical twins, yes, they share a genetic make-up. That being said, environment does play a part in how we develope. For example, if the twins grew up in the middle east, neither twin would admit to being gay. Even the gay twin would probably repress it and live a straight life. They share genetic make-up, but that doesn't mean there bodies function in exactly the same way or responde to stress, environment the same way. It's like maybe a "switch" was flipped in the gay twin, which activated whatever it is that causes us to be gay. Some will argue homosexuality isn't genetic, but there are few clues that it could be. Just like if you are female and carry BRAC 2 gene, you may or may not get breast cancer. Who knows what triggers it?

There is a whole "nature/nurture" mix to the system that people seem to try to make things go 100% in one direction. Not the case. There are cases of identical twins both being straight, gay, and mixed. Some twins do their best to emulate each other, and some twins do their best to differentiate themselves. There is some "base tendencies" and common factors, but each is their own self.

On point 2: There may be a genetic tendency or "vunerability" to becoming an alcoholic, but since "B" abstains then "B" is not an alcoholic. I have friends who have an alcoholic parent (or two) and they do not drink on the reason that they do not want to even have the chance of becoming an alcoholic.

1) Sexuality is determined during prenatal development. Since the twins developed within the same womb it would seem likely that both share the same sexuality, though you have to take into account that althought they are genetically identical they may not receive exactly the same nutrients and/or hormones.

Twin studies show that there's about a 60% chance of both twins having the same sexuality.

2) Alcoholism is not genetic, though an addiction to certain substances may develop if the mother takes them during pregnancy. This can be seen when newborns of alcoholic mothers go through withdrawal symptoms.

Alcoholism is a gene you have that can remain dormant unless activated by drinking alcohol. So if they are identical in genetic makeup that means both twins have the potential to become alcoholics if the gene is activated. Sounds like twin A activated it and twin B has not.

To part one of your question I think being gay is more than just genes its something in the brain that makes someone that way. Just because they are identical genetically dosent mean they both have to be gay and have the same thoughts running through their brain.

They two different people i'm a twin myself, for e.g. my twin is brainy and i'm not. Just because twin A is gay does not mean twin B is too, and on the second paragraph, if twin B has never drank then he is not an alcoholic, he has never had and alcohol in his system, but if twin A drinks all the time then he is a alcoholic, twins are two different people, yeah ok there brother or sister but they are not one person.

hope this helps.

same twins (observe: this would not prepare to fraternal twins) have precisely an identical sequence of DNA base-pairs - the 'genetic code'. despite the fact that, this would not lead them to same human beings because of the fact there is likewise something regular as epigenetics, that's, communities of atoms (usually communities regular as methyl communities - -CH3) related to the DNA that impacts how the DNA works. besides, truthfully everyone seems to be raised in a various ecosystem. With same twins, the ambience is greater comparable than maximum, yet nevertheless no longer an identical, and this would account for the adaptation. As for the dad and mom, babies are a various combination of genes that their dad and mom and oftentimes have characteristics that the dad and mom did no longer have. wish this permits.

Of course not. Just because they're twins doesn't mean they have identical thoughts and identities. They LOOK the same. It doesn't mean they're the same walking, talking, thinking person in two different bodies.

it is more a personal opinion as to whether you like guys or girls, and twins do not always agree, so if the one is straight, they are straight. i think you are right tho that it is more common for them to be the same in most ways. but this is more opinion rather than genetic makeup.

For the first scenario, if (and i stress "if") there is a "gay gene" that would be true. Because the twins have the same genes.

But if there isn't a "gay gene", then no. It's not.

In the second it wouldn't be, because alcoholism isn't genetic.

So, no.