DNA testing has shown that all humans have a common female thread Are we all decended from one female ?
820464
No. Only our mitochondrial DNA (mtDNA) is all descended from one female who lived in Africa 150,000 years ago. There were many more females living then, it's just that all the mitochondrial DNA descendents of the others have become extinct in the meantime. That's not to say all our mtDNA is identical today. Over time it has mutated in different populations. We use mtDNA for DNA fingerprinting in forensics. \n\nOur nuclear DNA, the DNA that encodes most of our genes, comes from many more females, again all African.
1121134
Because if so, we wouldn't be surprised to see evolutions in same species.  For instance, nobody would have cared that I went from man to woman because it would be so acceptable.  Here is some truth:  In reality, I am and always have been a woman.  I like quirky, interesting and fun to answer questions.  I chose  brown hair because YA's blond hair looks ugly to me.  Brown is not my real hair color.
275799
They are such multi-faceted beings !!!\n\nFemale dysfunction.  Despite significant anatomic and embryologic parallels between men and women, the multifaceted nature of female dysfunction clearly is distinct from that of the male.
26335
Personally, I think it's a very strange statement.  Both sexes have had enormous impact on humanity down through history.  We can learn much from both men and women.
961083
If you go strictly by one-man-one woman -- no.\nIn the overall human population, women outnumber men by a small percentage (about 52% to 48%).  That leaves a few million women out in the cold when it comes to husbands.\n\nThe higher ratio of women to men has been around ever since there have been humans (we all start out as female after conception, it takes a specific genetic and hormonal "kick" to make a male) -- it's one reason plural marriage (polygamy) was the rule in ancient cultures, it allowed all the women in a social group to have husbands.
1112902
The anunaki supposedly engineered modern humans and we are The 7Th genetic experiment on earth. very interesting ideas i keep an open mind on all things until somethings proved  100%. fact .            good question
888730
They are not sure. I believe it is. I have endo and most of my older female relatives have had reproductive problems their entire lives.
64866
The offspring of two humans is human. Until scientists declare that there is a homo superior intead of a homo sapien based on chromosome differences, there can be no other result.
656137
We have common ancestory.  We didn't come from them(that would be akin to saying that someone came from their brother or sister) related-Yes, decended from-No.\n\nThis question seems to be a curious religious "fish hook". In mentioning "came from" in the question it seems to indicate there is a certain level of acceptance that there is such a thing as decendancy, lineage etc(and that it is possible that it could happen between species).  The theory of evolution is nothing more than lineage over the loooong term.  Find some pictures of your ancestors, think about how many generations seperate you.  Set aside for a moment any preconcieved notions you may have, take a good look into the intelligent eyes of a chimpanzee.  Maybe we aren't that different after all.    \n\nDo you look like a monkey?  Yea, and I smell like one too.  ;)
1062994
You're right. It's not easy to tell from Yahoo IDs whether people are really male or female; but the answers to this question are quite enlightening!
415423
hmm always thought there were more girls than guys in this world, never really thought about it, but according the the current theories behind genes, there should be an equal chance between recieving the chromosomes for a boy as a girl.
821002
There are also children. *g* Now if you are talking about male and female genders, there are also hermaphrodites and others with genetic abnormalities.
611844
It's genetic. We are all related to the animals. Look at the chimp in the zoo. Look at the face and the ears.
728283
The male and female reproductive "tracts" are homologous.  This means that they're similar in structure and evolutionary origin, but are different in function.
126625
Where's your evidence?\n\nWe all start out female (that's the reason guys have nipples). The gender gene kicks in later and we develop into males and females. Suppose any genetic or hormonal conditions which lead to homosexuality kick in after gender is determined? There'd be no more reason to think that ALL women would therefore be bisexual than there would be to say all men were bisexual.
1101957
Because women, just like men, have a built-in, primordial cumpulsion to have sex with multiple partners.\n\nBy now, there are a bunch of women out there screaming that I'm wrong, but really...read a study, it's true.  We women may have a better ability to ignore this trait than men do, but it's still there in the background.\n\nThere is a need for us to mix up our DNA.  It's not healthy for any species to limit its breeding patterns.  Therefore, in order to keep things mixed up, humans have a tendency to look for new partners.  In women, this often connects to their menstrual cycle.\n\nYou'll also notice that women subconsiously dress in a more suggestive manner than normal, as they approach their fertile time of the month.
1109589
well, that is certainly an interesting question! haha. i suppose that you could be right, but then, we must define what a "man" and what a "woman" is. there are the obvious physical differences, and then the sometimes-not-so-obvious hormonal differences. while we do all start out as female, there is a definite change that occurs in men. i mean, just look at the Y chromosome. i mean, it's an excellent thought, and i'm no one to disprove it, but i think that instead, i might say:\n\nmales and females start out as a similar form with female-like qualities in the womb, but then, as development takes place, the sexes differenciate.\n\nbut that's my thought. haha. good question!