In Avery, MacLeod and McCarty experiment, the transformation was affected by the use of:

A molecule that can act as a genetic material must fulfill all the following criteria except:

1. It should be able to generate its replica.

2. It should chemically and structurally be stable.

3. It should be able to express itself in the form of Medelian characters.
4. It should provide scope for rapid changes required for evolution.

Taylor conducted the experiments to prove semiconservative mode of chromosome replication on :

1. Vince rosea

2. Visia faba

3. Drosophila melanogaster

4. E. coli

Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?

The unequivocal proof that DNA is the genetic material was given by 

1. Griffith

2. Avery

3. Hershey and Chase 

4. MacLeod

In Hershey and Chase experiment, the DNA of the phage was labelled with

Which scientists first gave experimental evidence that DNA is the genetic material?

1. Avery, MacLeod , and McCarty who repeated the transformation experiments of Griffith, and chemically characterized the transforming principle.

2. Garrod, who postulated that Alcaptonuria, or black urine disease, was due to a defective enzyme.

3. Beadle and Tatum, who used a mutational and biochemical analysis of the bread mold Neurospora to extablish a direct link between genes and enzymes. 

4. Meselson and Stahl who showed that DNA is replicated semiconservatively.