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 provide scope for rapid mutations

(4) It should be able to express itself in the form of "Mendelian Characters"

DNA chemically is less reactive and structurally more stable than RNA. Therefore,

1. DNA has evolved from the RNA

2. RNA can directly code for proteins

3. DNA is the better genetic material than RNA

4. The protein synthesizing machinery has evolved around RNA

Consider the following statements:

I. RNA is the genetic material of the QB bacteriophage

II. DNA chemically is less reactive and more stable than RNA

III. Viruses having RNA genome and having shorter life span mutate & evolve slowly.

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Radioactive thymidene is fed to cells about to enter S-phase. It will make radioactive

(1) euchromatin

(2) heterochromatin

(3) Both (1) and (2)

(4) neither euchromatin nor heterochromatin

Which of the following is a genetic material in most of the organisms?

1. DNA

2. RNA

3. Both DNA and RNA

4. Nucleic Acid

Which of the following can act as genetic material?

1. RNA only

2. DNA only

3. DNA but not RNA

4. DNA and RNA

In rRNA, thymine pairs with 

1. adenine

2. uracil

3. both 1 and 2

4. None of these

Which of the following statements is correct?
I. The biochemical nature of genetic material was not defined from the experiments conducted by Griffith
II. Working on transformation Avery et al concluded DNA is genetic material but not all biologists were convinced
III. RNA is the genetic material in TMV, QB bacteriophage etc.
IV. DNA is the predominant genetic material while RNA performs dynamic functions of messenger adapter
V. Viruses having DNA genome and having shorter life span mutate and evolve faster
1. All are correct             

2. I and II             

3. All except V               

4. III and IV

RNA is not the genetic material in:

DNA is structurally and chemically more stable than RNA because of all the following except: