Nucleotides

Q.

Chargaff's rule states that in an organism

[CBSE PMT 2003]

1. Amounts of all bases are equal

2. Amount of adenine (A) is equal to that of thymine (T) and the amount of guanine (G) is equal to that of cytosine (C)

3. Amount of adenine (A) is equal to that of guanine (G) and the amount of thymine (T) is equal to that of cytosine (C)

4. Amount of adenine (A) is equal to that of cytosine (C) and the amount of thymine (T) is equal to guanine (G)

Q.

Two nucleotides are linked through

1. 5' - 3' Phosphodiester bond

2. 3' - 5' Phosphodiester bond

3. 2' - 3' Phosphodiester bond

4. 3' - 2' Phosphodiester bond

Q. Purine derivative among the following bases is

1. Guanine
2. Cytosine
3. Thymine
4. Uracil