Choose the correct statements from the following.
I. The hallmark of the double-stranded helical structure of DNA is the hydrogen bonding between the bases of opposite strands.
II. Lac operon is the prototype of operon in bacteria which codes for genes responsible for metabolism of lactose.
III. Chromosomal theory of inheritance was proposed by Jacob and Monod.
IV. The chromatin that is more densely packed and stains dark is called euchromatin.

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

II, III

I, IV

I, II

III, IV

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The Chromosomal theory of inheritance was proposed by Sutton and Boveri. The chromatin that is more densely packed and stains dark is called heterochromatin, transcriptionally inactive. The chromatin that is more loosely packed and stains light is called euchromatin. It is transcriptionally active chromatin.

Watch 3-min video & get full concept clarity