Q. In polytene chromosomes dark bands are visible. These bands are formed by the position of
A) Protein particles
B) Chromomeres on chromonemata
C) Nucleosomes
D) None of the above
Explanation
Polytene chromosomes was reported by Balbiani (1881) from cells of salivary glands of insect larvae. Polytene chromosomes contain several dark stained regions called bands separated by lighter or less stained area called interbands. These dark bands are heterochromatin (genetically insert) area.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.