The Naked Scientists

The Naked Scientists Forum

Author Topic: How does temperature determine sex in some species?  (Read 5452 times)

Joel Hillman

  • Guest
Joel Hillman  asked the Naked Scientists:
   
Naked Scientists,

I had been taught that some animals genders can be decided by the temperatures and some other factors, for example, a warmer temperature will induce a male.

But now with my further studies (good old medicine!), in humans at least, gender is decided at conception, by combinations of X and Y chromosomes.

I would have assumed that these these would have been the same with humans and animals. Could you explain this please?

Joel

Johnny was a chemist, Johnny is no more,
What Johnny thought was H2O was H2SO4


What do you think?


 

Offline RD

  • Neilep Level Member
  • ******
  • Posts: 8123
  • Thanked: 53 times
    • View Profile
How does temperature determine sex in some species?
« Reply #1 on: 27/05/2009 21:30:22 »
I had been taught that some animals genders can be decided by the temperatures and some other factors,
 for example, a warmer temperature will induce a male.

It is advantageous for male crocodiles to become as big as possible, this can only happen when conditions are warm producing the maximum vegetation and consequently the maximum amount of prey.

Also warm conditions enable the cold-blooded croc to be most active and able to catch more prey and become big as possible.
« Last Edit: 27/05/2009 21:32:17 by RD »
 

Offline Shadec

  • Jr. Member
  • **
  • Posts: 47
    • View Profile
How does temperature determine sex in some species?
« Reply #2 on: 12/06/2009 09:48:53 »
But how does it actually affect it? the advantages you stated are clear, but what is the physiological effect?
Thanks
 

Offline thedoc

  • Forum Admin
  • Administrator
  • Sr. Member
  • *****
  • Posts: 511
  • Thanked: 11 times
    • View Profile
 

The Naked Scientists Forum

How does temperature determine sex in some species?
« Reply #3 on: 01/12/2009 18:47:27 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums
 
Login
Login with username, password and session length