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All babies do not start off as a girl in the mother's womb.

Here's why:


Women only produce X chromosomes. Men produce both X and Y chromosomes. XX = female and XY = male. When a woman's egg (X) is fertilized by a man's Y sperm a boy baby is conceived. When a woman's egg (X) is fertilized by a man's X sperm a girl baby is conceived.

So the man makes a son or a daughter. The woman is unable to determine the gender of the baby. During conception there is a 50% chance of creating a boy and a 50% chance of creating a girl but either way it all depends on whether a Y sperm gets to the egg first to fertilize it OR an X sperm reaches the egg first.

Gender is complete at the moment of fertilization (conception) and then the baby (whether male or female) continues to grow and develop in the mother's uterus (womb).

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^That's not fully correct

All babies do have a set gender but they do all start off with female *** organs. This is because the male organs form from chemical stimulation of the female organs. We don't know why this is.

And in cases of pregnancies at an older age, there is more chance of chromosomal abnormalities, which means the mother could be the one to create the male baby (and not the dad like normal pregnancies).

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35 Answers

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Except for Chuck Norris.
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already knew it. Did a research project about Androgen Insensitivity Syndrome once. Some of the websites mentioned this.
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Yes I knew that. But it was a surprise at first. I'm glad to have heard the explanation of how that change takes place. Life is very interesting.
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Come on give me a break.
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That's weird. how the **** do they know this?
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I knew this.
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Yeah, I knew this. I read too much, that's why :3
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Since i was about 11 and studying basic genetics.
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Sonography shows clearly
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What?!
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Interesting, I did not know this. I just knew it was up to biology to determine gender.
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of course i knew that . its the basics in genetics
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basic info their
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So how come the mom is always blamed when she gives birth to a GIRL????????
AND when I was in intermediate school, our PE teacher told us that when a woman's ovaries and a sperm mixed together, the woman could have a baby. ( I thought females were born with sperm like frogs). BUT, she failed to tell us that the woman had to have *********** to have a baby and that only males have sperm! Back then, I guess the teacher was not allowed to say "***********" or "have ***" to us 12-year old students.
You have any idea how stressed out I was whenever I had my period every month, thinking I could be pregnant because of my period????? Period equaled PREGNANCY!!!!! I finally found out from my high school friends what *********** is.
I certainly hope *** education in school has improved since 1962!!!!
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Women do not get the chance to unfold in uterus.
So they spend their lives enfolding us. It´s called vengeance.
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LOLA!!!
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I also wonder why some men think they're women and why some women think they are men.
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Of course I did.
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And do you have any pictorial images to back this statemeant up. Cause I'm not finding any evidence to prove this and ibe searched everywere.And there's no evidence. Give me a link. Cause from what my teacher said it's female from looks but is considered blank. She graduated from MIT and was a scientist before teacher. Give me evidence.
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Well I say,"the women of the world."Have done their part in populating<"the entire planet!"Why you ask?"Because we LOVE!"And for the most part our Mothers taught us so much!And for nothing else,we should all thank our mothers for that!"Word from a Mother"
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yh thats right
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Wait does this mean what i think it means... I USED TO HAVE ****
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It's a myth. It started because our gonads are in the abdomen at the beginning of our formation. If the male contributes the male chromosome (Y) the baby will develop into a boy - moving his gonads down out of his pelvic area so they could become testicles.

If the male contributes the female chromosome (X) the baby will develop into a female - the gonads are in place already though! Since ovary's remain in the abdomen, people ****** that means we all start out as females.

But gender is not determined by the position of the gonads on a zygote. The chromosome the sperm is carrying from the male is what determines our gender.
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Yes. I learnt in psychology that babies actually start off with female *** organs. After 11 weeks or so of development, the baby's gender is determined. If the baby gets a testosterone wash, then the baby will form genitals and will become a boy. If not, it will continue to develop as a girl. We were studying about how girls have more wiring in their brains and came upon this topic :)
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It's a myth. It started because our gonads are in the abdomen at the beginning of our formation. If the male contributes the male chromosome (Y) the baby will develop into a boy - moving his gonads down out of his pelvic area so they could become testicles.

If the male contributes the female chromosome (X) the baby will develop into a female - the gonads are in place already though! Since ovary's remain in the abdomen, people ****** that means we all start out as females.

But gender is not determined by the position of the gonads on a zygote. The chromosome the sperm is carrying from the male is what determines our gender.
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I did know that. I remember making fun of the boys in class when we learned it.
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Generally, this is true. It's not always true. We need to account for that. If I recall the theory correctly, it's that the Y chromosome has a big part in triggering the change from female to male. It is always possible to have a defective Y, or it's also possible for this trigger to be external. You do get the occasional girl with XY or boy with XX. It's rare, but it does happen. It's not necessarily fair to say that we all start out as female, but without this trigger we all would become female. It's just a LITTLE more complex than simply XY is male and XX is female. That's a good way to think about the basics, but the actual science runs deeper.

We can think of it a lot like Newton's Laws. They are great for making calculations, but they will eventually fall apart in some circumstances (say, as we approach the speed of light), so we use Einstein's Laws to FURTHER understand things. But even Einstein's Laws will break down (say, inside a black ****).
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I prefer to think of all babies as androgynous until they develop genitalia, it sooths the mind.
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The boy is a YX not an XY. You always put the dominant chromosome first. The only way it could be an XY is when the female gave the dominant chromosome and that is rare because that is a sure sign the baby would have a defect. I learnt that the sperm justifies weather the baby is a male or female. Neither gender shows up until 11 weeks along. Its very **** to tell which way is the truth. All we know is that between 18 to 20 weeks whoever wants to know will find out if they are having a boy or girl. This is just another amazing thing our body can do.
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It's a myth. It started because our gonads are in the abdomen at the beginning of our formation. If the male contributes the male chromosome (Y) the baby will develop into a boy - moving his gonads down out of his pelvic area so they could become testicles.

If the male contributes the female chromosome (X) the baby will develop into a female - the gonads are in place already though! Since ovary's remain in the abdomen, people ****** that means we all start out as females.

But gender is not determined by the position of the gonads on a zygote. The chromosome the sperm is carrying from the male is what determines our gender.
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the most common sign of this is male ******* the reason men have them is because we all form in the womb off of the female template. when the fetus reaches a certain stage of development, the ****** characteristics start to form based on the predetermination of the *** of the ***** due to the previously stated XX or XY chromosomal differences. the ***** is actually an over sized ********, the ******* is a closed over ****** (thats what causes the line down the middle, thats where both **** met and fused) the testicles were obviously ovaries, the term ***** drop ring a bell, its because they start off inside your abdomen, just like ovaries, but drop to their current position usually shortly before birth, but can occur afterwards, sometimes years afterwards, and the path they follow to the ******* is what was going to be a ****** otherwise. the prostate is essentially a smaller uterus... didnt anyone pay attention to biology in highschool
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Biology 101?
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"male organs form from chemical stimulation of the female organs" Yes... that's exactly how my husband said it works... my female *** organs stimulated his male organ and for both of us... that worked out JUST FINE!
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I knew that!
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now, now, now. And I'm sure you love every minute of it!!!!!!!!!!! Think of what would happen if a woman's ****** has a spasm and you couldn't pull out? Do you know it's the woman who has to have an injection to relax her ******* muscle? (i read that in my doctor's office!)
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