Question
Biology Question on Regulation of Gene Expression
Prokaryotic genetic system has
A
DNA & histone
B
DNA & no histone
C
no DNA & histone
D
no DNA & no histone
Answer
DNA & no histone
Explanation
Solution
Prokaryotic cells do not have true nucleus which is the characteristic feature of eukaryotic cell. The genetic system of prokaryotic cell have nucleoid, made of naked (without histone protein) & folded DNA which lies freely in the cytoplasm or in contact with a membranous structure called mesosome.