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Post by smokeyvera on May 22, 2011 0:11:12 GMT -5
Best answer yet, and I even understoood allele pairing. [laugh] Thanks. I was also trying to come up with an analogy for the Kinsey orientation range using the gene that causes red pigmentation in hair and how it causes shading from strawberry blond to auburn, but I'm blanking on the gene name and managed to confuse even myself with my so-called "explanation". Need to work on it some more before I attempt to post.  When Mendel did his observations on heredity, he used peas, but large numbers of them. In the case of the red pigment in hair, I think if you use the Punnett Square, you can determine the dominant and recessive alleles, and the probability of the offspring. I think it is best demonstrated when you cross a red carnation with a white carnation and the ensuing array of pinks that you get. But I don't think gay is a recessive gene that can e used in the Punnett Square. But ZI do understand how you could have varying degrees of red hair color using the premise of the Kinsey Scale. |
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Post by SusieFierce on May 22, 2011 0:21:51 GMT -5
My question to you- do you have kids? If so straight or gay? Not trying to be a jerk, just trying to understand. No! No kids of my own! But if straight people make Gay people - isn't it possible that Gay people could make straight people! After all, everybody comes from a union of egg & sperm! I don't think there are "Gay" eggs or "Gay" sperm! :-/   Yes, that was to my earlier point that straight couples have been producing gay children for centuries. Why should the reverse not be true? I know a family where three of the seven children were/are gay (one girl, two boys, two have passed away). You just never know. |
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Post by SusieFierce on May 22, 2011 0:28:22 GMT -5
BreakingNews Breaking News Minnesota House approves constitutional ban on gay marriage, allowing voters to decide in 2012 - AP Spectacular. >:(  |
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Post by maria222pf on May 22, 2011 0:30:53 GMT -5
He's baaack! adamlambert Adam Lambert Jared has not left the building. #footlonglives 7 minutes ago Must be Jared has a new Subway commercial? Adam must be bored. Twitter is having fun with it, peeps are thinking Jared might be the name of the Glambulge   |
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Post by smokeyvera on May 22, 2011 0:33:37 GMT -5
No! No kids of my own! But if straight people make Gay people - isn't it possible that Gay people could make straight people! After all, everybody comes from a union of egg & sperm! I don't think there are "Gay" eggs or "Gay" sperm! :-/ Yes, that was to my earlier point that straight couples have been producing gay children for centuries. Why should the reverse not be true? I know a family where three of the seven children were/are gay (one girl, two boys, two have passed away). You just never know. But if you use Mendelian analysis, first generation is skipped, so you can produce all straight, then the straight 2nd gen produces a gay, then a gay can produce a straight and this generational straight can produce a gay. So yes indeed it can happen, but more likely skipping generations. genetics just fascinates me |
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Post by rihannsu on May 22, 2011 0:36:10 GMT -5
Crystal Bowersox debuts with 58,000 copies of Farmer’s Daughter - goo.gl/TFs9S via @shareaholic < @adamlambert mention Says Adam should have won. Crystal's album is just coming out now? I thought it had been out for ages. This was an old article apparently repost today on someone's blog. |
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lm2718
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Post by lm2718 on May 22, 2011 0:41:21 GMT -5
[laugh] Thanks. I was also trying to come up with an analogy for the Kinsey orientation range using the gene that causes red pigmentation in hair and how it causes shading from strawberry blond to auburn, but I'm blanking on the gene name and managed to confuse even myself with my so-called "explanation". Need to work on it some more before I attempt to post. When Mendel did his observations on heredity, he used peas, but large numbers of them. In the case of the red pigment in hair, I think if you use the Punnett Square, you can determine the dominant and recessive alleles, and the probability of the offspring. I think it is best demonstrated when you cross a red carnation with a white carnation and the ensuing array of pinks that you get. But I don't think gay is a recessive gene that can e used in the Punnett Square. But ZI do understand how you could have varying degrees of red hair color using the premise of the Kinsey Scale. Wow! very late to the party.... Not all the traits that are inherited follow the simple Mendelian rules. Many traits have complex ways of inheritance and this is if we discuss only genomic DNA. There are traits that are influenced by epigenetic factors - for exmple: we carry DNA also in the mitochondria (our cells energy plants) and the mitochondria is coming strictly from the maternal side of the pair as the sprem does not contribute any mitochondria to the gamete (potential embryo). Regarding "sexual orientation" this is probably a complex trait and if we try to narrow it down to attraction to the same sex, there are many genes that could be involved from olfactory receptors, hormones, transcription factors, combinations of different genes variations, etc. We do not know what causes one person to be attracted to another and this kind of genetic study is problematic. There could be other issues that might not be obvious to the plain observer that might appear as same sex orientation and are not - Example an XY female that is attracted to other females. All I'm saying is that this thing is not simple and we currently do not have an answer. There are a few groups that managed to change the attraction of mice to one another - sort of mimicking same sex attraction by manipulating a certain hormone but the study was not conclusive. Regarding creating a viable embryo from two sperm cells and an empty egg - there are published works that tried to do this since the early 80s. There are issues with that I'll be happy to explain to whom ever is interested. Same as with cloning an embryo from somatic cells. I'm sure a solution will be found but we are not there yet. It is a bit late/early and I hope what I wrote is clear |
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kapsiz
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that which we call a rose, by any other name would smell as sweet...
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Post by kapsiz on May 22, 2011 0:45:14 GMT -5
He's baaack! adamlambert Adam Lambert Jared has not left the building. #footlonglives 7 minutes ago Must be Jared has a new Subway commercial? Adam must be bored. Twitter is having fun with it, peeps are thinking Jared might be the name of the Glambulge ohhh sh*t! I'm sure Adam is having a HUGE laugh about this twitter escapade!  |
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Post by Deleted on May 22, 2011 0:49:54 GMT -5
Lord, I love this site. No where else can you go from a twitter party, possible babies, who kissed who and why to a discussion on genetics. Only thing that has kept me sane this last few months is this site!!
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Post by mszue on May 22, 2011 0:50:46 GMT -5
I just got home from a lecture and see we are into genetics here!! haha. Now I am no medical expert but I believe the best explanation is that all fetus begin life the same default 'female' way...sort of. It is 'genetics' or DNA and chromozones that determine the sex of a child but not its orientation. That is caused by complex washes of androgens that subtly change the brain structure, etc. If a male sexed fetus does not get the 'appropriate' androgen wash at the appropriate time, it may end up with that 'default' female-ish brain. Ditto, if a female sexed child receives an extra wash of androgens she may end up with a 'masculined' brain....and orientation. There is more to it than just this...but I believe something along these lines is at the core. The female and male brains are structurally different...particularly in the thickness of the corpus collosum that allows messages to pass more easily between sides of the brain....that is why women tend to rebound from a stroke better than men as the other side of the brain can take over in an emergency, more effectively.
Hope I haven't screwed this up....it has been a while since I 'knew' this.....
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