My Site
  • ON THE GO!
  • THE EXPERIENCE

Day 230 -> Can Humans Choose their Babies Gender?

1/5/2014

0 Comments

 
 Imagem
Baby's gender was probably affected by enviromental temperature, but what about humans? (Image found on Google)
     If your first thought was "well, no", then think again. According to Valerie Grant, from the University of Auckland, New Zealand, humans do have the capacity to choose their offspring's sex.
     The most accepted theory about it among mammals states that the sexual proportion of individuals is a result of the animals generating more descendants of the particular gender which is more likely to produce offspring. Got it? Well, you can smell a little Natural Selection there, if you look close enough. But what about us, humans?
    According to Valerie, the mothers are responsible for the choice and the hormone testosterone has a decisive role in the gender determination of the babies. She believes that the action of the hormone on the ovarian follicle may result in the formation of eggs that are predisposed to receive X or Y sperm cells.
     One example of such control can be observed in the proportion of births
of boys and girls after the world wars. Boys exceeded the historic averages in more than 20%. That may caused by the stress the women were exposed to during the war. Because of it, Valerie says, they were more likely to produce sons. Nowadays, the birth proportion of boys and girls is 106 for 100, respectively.
~Ally
0 Comments



Leave a Reply.

    Author

     Ally is a Biologist, Illustrator, Photographer and ex-procrastinator.

    Categories

    Todos
    Art
    Astronomy
    Botanic
    Comics
    Curiosities
    Diy
    Documentaries
    Folklore
    Food
    Games
    Geography
    History
    Inspiration
    Literature
    Maps
    Movies
    Music
    Mythology
    Nature
    Physics
    Sports
    Weapons
    Zoology

    Archives

    Abril 2014
    Março 2014
    Fevereiro 2014
    Janeiro 2014
    Dezembro 2013
    Novembro 2013
    Outubro 2013
    Setembro 2013
    Agosto 2013
    Julho 2013
    Junho 2013
    Maio 2013

    RSS Feed


Powered by Create your own unique website with customizable templates.