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

Which of the following statements is not true about DNA replication in eukaryotes?

(a)

Replication begins at a single origin of replication.

(b)

Replication is bidirectional from the origins.

(c)

Replication occurs at about 1 million base pairs per minute

(d)

There are numerous different bacterial chromosomes, with replication ocurring in each at the same time.

When lactose is present in the culture medium:

(a)

Transcription of lac y, lac z, lac a genes occurs.

(b)

Repressor is unable to bind to the operator.

(c)

Repressor is able to bind to the operator.

(d)

Both (a) and (b) are correct.

The term gene was coined by ________

(a)

Mendel

(b)

Lyon

(c)

Johannsen

(d)

Hershey

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

(a)

Yeast

(b)

Drosophila

(c)

E. coli

(d)

Neurospora

___________ 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 concept of RNA world was independently proposed by __________

(a)

Orgel, Brick and Carl woese

(b)

Brick, Griffith and Crick

(c)

Wilkins and Franklin

(d)

Walter Gilbert

Replication errors are corrected by repair enzymes such a ______.

(a)

Polymerases

(b)

Kornberg enzyme

(c)

helicases

(d)

Nucleases

DNA finger printing technique was developed by

(a)

Frederick Sanger

(b)

Alex Jeffrey

(c)

Hershey

(d)

Rosalind Franklin