A molecule that can act as a genetic material must fulfill the traits given below, except

(1) it should be able to express itself in the form of 'Mendelian characters'

(2) it should be able to generate its replica

(3) it should be unstable structurally and chemically

(4) it should provide the scope for slow changes that are required for evolution

Which of the following can act as genetic material?

(1)RNA only

(2)DNA only

(3)DNA but not RNA

(4)DNA and RNA

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

Presence of which of the following features make(s) the RNA less stable as compared to
DNA?

(a) Free 2' OH

(b) Single ringed nitrogenous base

(c) Uracil in place of 5-methyl uracil

1. (a) and (c)

2. (a) and (b)

3. (b) and (c)

4. (c) only

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

RNA is not the genetic material in:

Select the incorrect statements from the following

1. (a), (b) and (c)

2. (b) and (c) only

3. (c) and (d)

4. (b) and (d)

Which of the following was presented as evidence in favor of “the RNA world” hypothesis?

1. The fact that DNA can encode genetic information

2. The fact that enzymes, made of protein, can catalyze biological reactions

3. The discovery that some enzymes are composed of RNA rather than protein

4. The discovery of new life forms that encode their genetic information in RNA rather than DNA

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

In rRNA, thymine pairs with 

(1)adenine

(2)uracil

(3)both 1 and 2

(4)None of these