Which one of the following statements about the particular entity is true?
Which one of the following statements about the particular entity is true?
Centromere is found in animal cells which produces aster during cell division
The gene for producing insulin is present in every body cell
Nucleosome is formed of nucleotides
DNA consists of a core of eight histones
Solution
Scientists have analysed the human DNA sequence present in a human-mouse somatic cell hybrid line possessing a translocation involving human chromosome-II and $\mathrm{X}$. This data indicates that the human insulin gene is located on the short arm of chromosome-II in every body cell but is not expressed in all cells.