Q. Which one of the following statements about the particular entity is true?
A) Centromere is found in animal cells, which produces aster during cell division
B) The gene for producing insulin is present in every body cell
C) Nucleosome is formed of nucleotides
D) DNA consists of a core of eight histones
Explanation
[Solution from source] Every somatic cell carries the full genome, so the insulin gene is present in all body cells even though it is expressed only in pancreatic beta cells. Asters are formed by centrioles (centrosome), not by the centromere. A nucleosome is DNA wrapped around a histone octamer, so it is the nucleosome (not DNA) that has a core of eight histones. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.