Biomolecules Question 23
23. Genes are packed into a bacterial chromosome by
[1997]
(a) histones
(b) basic proteins
(c) acidic proteins
(d) actin
Show Answer
Answer : b
Hints & Solutions
(b) In bacteria the chromosome or nucleoid is a naked double stranded DNA. The bacterial DNA is folded with the help of RNAs forming a super coiled circular complex. The coiling is stabilized with the help of non-histonic polyamines and a number of positively charged ions. Eukaryotic DNA is associated with histone proteins that are helpful in its coiling to form chromatin fibres.
