Cold/Warm-Bloodedness

Viewing 1 reply thread
  • Author
    Posts
    • #117175
      Bud Fudder
      Participant

      I’m curious about the evolution of cold-bloodedness (or warm-bloodedness, whichever evolved from the other).

      Does science have any idea when the evolutionary split occurred? What was the evolutionary advantage that gave it survivability? How many changes would be required for a modern animal to evolve to the other (for example, for a lizard to evolve warm-bloodedness)?

      Thanks in advance for any help.

    • #117426
      Darby
      Participant

      Like a lot of things, there’s a trade-off with “warm-bloodedness.” Sustaining a constant internal temperature means keeping all of your chemistry at its optimum performance levels, but the energy needed to do it requires more oxygen and fuel than the alternative.

Viewing 1 reply thread
  • You must be logged in to reply to this topic.