Q. Which of the following symbols are used for representing chromosome of birds?
A) ZZ-ZW
B) XX-XY
C) XO-XX
D) ZZ-WW
Explanation
ZW-ZZ system of sex determination occurs in certain insects (gypsy moth) and vertebrates such as fishes, reptiles and birds and plants such as Fragaris elatior.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.