Hershey and Chase experiment with bacteriophage showed that ______.

(a)

Protein gets into the bacterial cells

(b)

DNA is the genetic material

(c)

DNA contains radioactive sulphur

(d)

Viruses undergo transformation

Which of the following is the correct sequence of event with reference to the central dogma?

(a)

Transcription, Translation, Replication

(b)

Transcription, Replication, Translation

(c)

Duplication, Translation, Transcription

(d)

Replication, Transcription, Translation

Meselson and Stahl’s experiment proved

(a)

Transduction

(b)

Transformation

(c)

DNA is the genetic material

(d)

Semi-conservative nature of DNA replication

One gene one enzyme hypothesis was proposed by Beadle and Tatum based on ________

(a)

Yeast

(b)

Drosophila

(c)

E. coli

(d)

Neurospora

The term nucleic acid was coined by ________.

(a)

Miescher

(b)

Hofmeister

(c)

Altman

(d)

Mcleod

___________ used radioactive labelled molecules to prove that DNA is the genetic material.

(a)

Hershey and Chase

(b)

Wilkins and Franklin

(c)

Griffith

(d)

Mcleod and Avery

The term ___________ refers to DNA of Prokaryotes.

(a)

Nuclein

(b)

Ribozyme

(c)

Genophore

(d)

Nucleosome

Human genome is approximately said to have __________ base

(a)

3 x 10⁸ bp

(b)

3.4 x 10⁹ bp

(c)

3.2 X 10⁷ bp

(d)

3x 10⁹bp

Select the two statements out of the four (I -IV) given below about lac operon,
i. Glucose or galactose may bind with the repressor and inactive it.
ii. In the absence of lactose, the repressor binds with the operator region
iii. The z-gene codes for permease.
iv. This was elucidated by Francois Jacob and Jacques Monod.
The correct statements are

(a)

i and ii

(b)

ii and iii

(c)

ii and iv

(d)

i and ii

Whose experiment finally provided convincing evidence that DNA is the genetic material?

(a)

Griffith experiment

(b)

Avery, Macleod and McCarty's experiment

(c)

Hershey-Chase experiment

(d)

Urey-Miller's experiment