Sex Determination
Why are we female and/or male?
Have you ever wondered why you are female and/or male? At first, I thought it’s a matter of chance that at times, we turn out to be female then some just become male. But there are scientific explanations for that. And if you are not happy with your sex then you might consider blaming your father.(LOL)
The determination of an offspring’s sex depends upon the sex chromosomes or what is scientifically termed as gonosomes.Gonosomes are of two types, the X and Y chromosomes. Our mom, having the mature ovum, carries two X chromosomes in diploid cells while the male, obviously our father having the mature spermatozoa carries half X and half Y chromosomes. So, female parents never contribute other gonosomes except for X. When ovum or the matured female cell is fertilized by a sperm bearing X chromosome, then the result will be a female(XX). In contrary, if an ovum is fertilized by a sperm carrying Y chromosome, the resulting offspring will be a male(XY). This means that it’s always a father’s contribution that determines our sex since female parents carry X chromosomes at all times.
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28 Responses to “Sex Determination”
On September 22, 2009 at 10:33 am
Interesting and educational!
On September 22, 2009 at 10:42 am
Interesting article.
On September 22, 2009 at 11:27 am
My sister in law has 3 girls. My first with my husband was a girl. My mother in law was wondering if we knew what the youngest was going to be. I told her the baby had a Y. She had NO clue what that meant. So I went out and got a little bib that said something about little boys being grandmothers favorite and gave it to her.
Thanks for an article to share with those who don’t know….
On September 22, 2009 at 11:37 am
Great article. I have wondered many times.
On September 22, 2009 at 11:43 am
Very interesting article. My boys go mad when I tell them they actually started out as girls! LOL I also watched a documentary that said it was down to some hormone that the mother produced while the baby is an embryo (i think) and that determines whether they will be gay or not, so its not a life choice as some people think!
On September 22, 2009 at 12:27 pm
I learned about this long ago…good article for those who don’t know.
On September 22, 2009 at 12:32 pm
Interesting!
On September 22, 2009 at 12:33 pm
You have done a really good job on this like you’re style loved it.
On September 22, 2009 at 1:00 pm
Did your research and compiled it nicely. Good job and i can see that you were actaully a book worm.LOL
On September 22, 2009 at 1:08 pm
Thanks for sharing
On September 22, 2009 at 1:13 pm
Thank goodness for all of those x chromosomes.
On September 22, 2009 at 1:28 pm
A simple explanation that’s easy to understand. Just the way I like it.
On September 22, 2009 at 3:29 pm
we always got told it depends on the time of the month when they conceive whether its going to be a girl or a boy, my dad had 5 daughters, so he had plenty of x’s, lol, thanks for sharing.
On September 22, 2009 at 5:06 pm
Hello! Good post Jane!
Best regards!
PPDDFF
On September 22, 2009 at 5:15 pm
Great information!
On September 22, 2009 at 5:31 pm
Well described!
On September 22, 2009 at 10:04 pm
Wonderful article, thanks for sharing!
On September 22, 2009 at 11:01 pm
Good job, very interesting!
On September 22, 2009 at 11:29 pm
This is as true as a book. It is one of my area of interest, so I\’ve researched it a long time ago. Excellent post, Jane.
Monica.
On September 23, 2009 at 12:10 am
Whoa, I never knew that!
Hehe, thanks for the info!
On September 23, 2009 at 2:35 am
This is a very interesting article!
On September 23, 2009 at 1:16 pm
I just got an education! Thanks!
On September 24, 2009 at 1:03 pm
I think that if there were such a thing as a YY chromosome, we would have destroyed each other a long time ago!!!
On September 26, 2009 at 3:14 am
Cool i feel like i went back a year into health class
On September 27, 2009 at 2:00 pm
and here I ‘ve been blaming my mother! just kidding. very informative,
On September 27, 2009 at 11:40 pm
all is well with the man s y chrome
but the x and y in mans sperm are not fifty fifty
and its that y guys who move slower than x lazy boys
thats why younger fathers can inject slow moving y further up the moms birth canal
so let the fast speedier spurt can be utiised well when boys are younger
as older parents with sperm ejaculation speed gets reduced and help moms and pops x-x to mate and hence more chances of females
sex early and produce kids when ur younger thats if u want to prove you are a man and have y also
rest if u only want to enjoy later on then treat girls and boys alike
On September 30, 2009 at 7:43 am
Im just full of x’s. Good article
On October 1, 2009 at 1:34 am
Educative and reinforcing.
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