molecules.
(ii) Histone code postulates that the state and activity of a particular region of
chromatin
depend on the specific modifications, or combinations of modifications, to the
histone tails
in that region.
(iii) The most notable histone modifications include acetylation, methylation and
phosphorylation.
(iv) Histone modifications alter the manner in which the histone tails of neighboring
nucleosomes interact with one another
Which among the above is a correct statement?

A:-Only (ii), (iii) and (iv)
B:-Only (i), (ii) and (iii)
C:-Only (iii) and (iv)

D:-All are correct

Correct Answer:- Option-D

Question50:-The major facilities supported by the Biotechnology Information
System Network (BTISnet) of the Department of Biotechnology, India include

A:-Indian Biological Data Centre (IBDC)

B:-Indo-Japan DAICENTER Programme

C:-MANAV : Human Atlas Initiative

D:-All of the above

Correct Answer:- Option-D
Question51:-Erythropoietin is secreted by

A:-Kidney

B:-Bone marrow

C:-Liver

D:-Lungs

Correct Answer:- Option-A

Question52:-Which of the following primary chordate characters are not lost even
after retrogressive metamorphosis in Ascidia

A:-Notochord
B:-Pharyngeal gill slits
C:-Dorsal tubular nerve cord
D:-Both (1) and (2)
Correct Answer:- Option-B
Question53:-Which of the following is false regarding B cells?
A:-Originate in bone marrow
B:-Differentiate in lymphoid tissue
C:-Surface immunoglobulin absent