New Research on the Y Chromosone

[Freddie53]

This is a new article on the Y chromosone. The Y chormosone determines if you are a male. The research indicates that the gender of the baby is determined from the very beginning. This is the website:

http://www.healthscout.com/template.asp?ap...etail&id=513720

Jonb we do hope we will read it and come back and tell us what is really new and what this means. I can quote the right information on a test. This does not mean I really understand it.

Also other websites out there that from authentic* scientific research that is new. Please post for all of us to read.

*Authentic here means from recognized medical people using standard research techniques with control groups that are organized properly to prevent misleading outcomes.

 

[jonb]

Interesting. I don't think all the loci for the sperm production are unique on the Y chromosome, though; it wouldn't be homologous.

 

[Mr._dB]

Originally posted by Freddie53@Jan 29 2005, 07:04 PM
The research indicates that the gender of the baby is determined from the very beginning.

This is hardly new, it's been known for at least half a century that the gender of a baby is determined at conception, by whether the sperm carries an X or a Y chromosome.

 

[D_Humper E Bogart]

I wonder why the Xs data is being withheld though?

"ARGH! Women are derived from aliens!"

Not bad as a beginners guide to chromosomes though, although palindromes are a bit "much" for the article, since they're not going to be the least conserved areas. I'd love to know how palindromes protect genes though.

 

[Freddie53]

Originally posted by Mr._dB+Jan 31 2005, 02:17 AM--><div class='quotetop'>QUOTE(Mr._dB &#064; Jan 31 2005, 02:17 AM)</div><div class='quotemain'><!--QuoteBegin-Freddie53@Jan 29 2005, 07:04 PM
The research indicates that the gender of the baby is determined from the very beginning.

This is hardly new, it&#39;s been known for at least half a century that the gender of a baby is determined at conception, by whether the sperm carries an X or a Y chromosome.

[post=278979]Quoted post[/post]​

[/b][/quote]
I didn&#39;t phrase that right. The article just explained in depth more about how it happens.

I was hoping for more web sites that are reliable to show up. One put out by Planned Parenthood is PPFA | teenwire. While written for teens, it includes subjects for all ages about both the male and female bodies. And these subjects deal with the development and mautration of the body throught out life including even old age. It is a wonderful site to gather at least general information.

I would love to see this forum develop a list of websites that any member could go to and see where to go to find any particular piece of onformation.

Guys are writing in all the time requesting help. A comprehensive website list that has been checked out by members would be wonderful to have. I would want to try to make sure that websites that are not valid or make outragious claims would not be one the list.

Freddie

 

[ziggity]

i did a report a few years ago about an organization that filtered semen to create (if i remember correctly) a 97% probability that you would conceive the gender of your choice.

 

[jonb]

Enough testosterone can create an XX male, though; enough estrogen can also create an XY female.

When I said it wouldn&#39;t be homologous, what I meant was, spermatogenesis is far older than the Y chromosome, and basically identical in all males except for diploid/haploid species. Here are some examples of sex determination:

*Birds and some insects have Z and W chromosomes. The W chromosome makes a bird female.
*Some reptiles are all female and reproduce by parthenogenesis.
*In bees, ants, and wasps, unfertilized eggs become males. This means that males are haploid, while females
*In some reptiles, sex is determined by temperature.
*Wolbachia determine the sex of many arthropods..
*Platypi have five pairs of sex chromosomes.

 

[Freddie53]

Originally posted by jonb@Jan 31 2005, 07:21 PM
Enough testosterone can create an XX male, though; enough estrogen can also create an XY female.

When I said it wouldn&#39;t be homologous, what I meant was, spermatogenesis is far older than the Y chromosome, and basically identical in all males except for diploid/haploid species. Here are some examples of sex determination:

*Birds and some insects have Z and W chromosomes. The W chromosome makes a bird female.
*Some reptiles are all female and reproduce by parthenogenesis.
*In bees, ants, and wasps, unfertilized eggs become males. This means that males are haploid, while females
*In some reptiles, sex is determined by temperature.
*Wolbachia determine the sex of many arthropods..
*Platypi have five pairs of sex chromosomes.

[post=279110]Quoted post[/post]​

Wow&#33; I remember a girl being disqualified from the Olympics for this reason. She was a female and had been so from birth but her DNA said male. If I remember correctly she has the XY chomosome pattern. I understand this is a routine test to make sure no guys have a sex change operation and then win in the events that are traditionally strong sports for men.

 

[Kimahri]

While vastly interesting, my brain has turned to liquid from the overwhelming and impressive knowledge you all have.

And, I finally fixed my server for work.

 

[jonb]

Well, Freddie, there are also X&#39;s and any number of extra X or Y chromosomes. Sometimes, dizygotic twins will merge and half the time this results in two different karyotypes; this is called a chimaera.