Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

CBSE - X - Biology - Heredity and Evolution

why can two sub populations of a species not reproduce with each other. ( 3 marks)

Asked by ashakumar 1st February 2011, 7:25 PM
Answered by Expert


Dear student, 
There are many factors that prevent any two subpopulations from interbreeding.  These are called reproductive barriers; they range from behavioral isolation (when individuals from the two populations are not sexually attracted to one another) to mechanical isolation (when the parts don't fit) to gametic incompatibility (when sperm from one subpopulation can't fertilize egg from another subpopulation ) to zygotic inviability (when a zygote fails to develop), to hybrid infertility (when a hybrid individual is sterile), etc
Team toppelearning
Answered by Expert 6th February 2011, 9:10 PM

Rate this answer

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Your answer has been posted successfully!