Q. The common point of attachment of all the arms of polytene chromosome, is known as
A) Centromere
B) Chromomere
C) Chromocentre
D) centrosomes
Explanation
The polytene chromosomes radiate as 5 long and 1 short arm from a deeply staining and more or less amorphous structure called chromocentre. This chromocentre is formed by the fusion of centromeric region of all the chromosomes and in males, entire Y-chromosomes.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.