Question

Which of the following is true?
(a) Lac operon hypothesis was proposed by Jacob and Monod.
(b) 'One gene-one enzyme hypothesis' was proposed by Beadle and Tatum.
(c) 'Southern blotting' is used in DNA fingerprinting.
(d) Uracil and thymine bases are present in DNA and RNA respectively.

• A. Only a, c
• B. a, b, c, d
• C. Only b, c, d
• D. Only a, b, c

Answer 1

The correct option is D Only a, b, c

Thymine and uracil bases are present in DNA and RNA respectively.
The rest of the given statements are true (a, b, c).