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


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

Explain that it is a matter of chance whether a couple will give birth to a boy or girl. (3 marks)

Asked by ashakumar 1st February 2011, 7:23 PM
Answered by Expert
Dear student,
A male has XY whereas a female has XX sex chromosomes. Hence all eggs carry X chromosome whereas half the sperms carry X chromosome whereas the other half of sperms carry Y chromosome. So when the Y carrying sperm fuses with the egg, a boy is born whereas a girl child is formed when the sperm carrying X chromosome fuses with the egg. 
Team Topperlearning
Answered by Expert 6th February 2011, 8:14 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp