yes, once again, the man is in control. men determine what they pass on. my theory is though, it depends on where the womans uterus is positioned. if it sits lower, i think Y's have a better chance. see, the Y is a fast swimmer [boy] but gets tired faster and the X [girl] goes for the distance, we may be slower, but we last a lot longer. so if the uterus is higher up on a woman, the Y's will be more likely to get to it. Lower, the quicker swimmer. Thats my medical theory, but im no doctor....wonder if that holds any truth. sounds good to me though
2007-01-26 04:09:28
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answer #1
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answered by CATHRYN K 2
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Yes it is. Women can only produce an X chromosome since they don't have a Y. Each individual sperm carries half of the male's DNA, so half have a Y chromosome and half have an X. It's pretty much a fifty fifty chance.
However there are instances of people who have an XY pairing and turned out physically female. This is due to the fact that there is only one small part of the Y chromosome that contains the determining factor whether the child will be male or female and that part happened to be missing.
Likewise, there have been cases where men had an XX pairing, and turned out to be male because that part of the Y chromosome had broken off of another chromosome and attached to one of the X's.
These are rare cases, but it is safe to say that the male determines the sex of the child.
But if we aren't just talking about humans, there are many different species who's sex is determined by environmental factors. I won't get into that as I'm assuming we are talking about humans, but if you'd like to know more about it, I'll site the book I learned all this from as the source.
2007-01-26 04:13:04
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answer #2
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answered by Xindy 4
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Yes, A woman's eggs all carry and X chromosome. The sperm from a man is either a X or a Y chromosome. The sperm that gets in to the egg first will determine the sex of the baby. If the X gets there it is a girl, if the Y gets there it is a boy.
2016-03-29 03:32:45
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answer #3
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answered by Anonymous
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Women supply the X chromosomes, Men have the X and the Y chromosomes. XX=Girl...XY=Boy.
2007-01-26 08:52:52
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answer #4
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answered by twonkybot 1
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Yes, all eggs carry the X chromosome. If the sperm carries an X chromosome, then a girl is the result (XX). If the sperm carries a Y chromosome, then the result is a boy (XY).
2007-01-26 04:05:05
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answer #5
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answered by Proud Mommy of 6 6
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Yes, the ovum carries only an X gene. The sperm also only carries one, but it can be either an X or a Y. If it's an X, then the combination XX produces a girl. If it's a Y, then the XY combination produces a boy.
2007-01-26 04:05:34
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answer #6
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answered by poetic license 2
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Yes.
Women are XX. So the only gene they can contribute is an X.
Men are XY. During the meisos process of gamete cell (sperm) production, your cells split and form either an X or a Y cell.
This combines with the X egg to make either a boy (XY) or a girl (XX).
2007-01-26 04:04:53
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answer #7
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answered by Anonymous
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Yes
2007-01-26 04:03:38
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answer #8
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answered by Maudie 6
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Yes, the man determines whether you get an XX or an XY.
2007-01-26 04:04:10
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answer #9
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answered by Anonymous
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Yes, the man determine the sex of the baby. So if he gets upset cause he wanted a boy and got a girl, then tell him its his fault! =)
2007-01-26 04:08:09
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answer #10
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answered by Angel 2
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