Number of base pairs in human chromosomes are:

1. $3<mspace\; width="1em"></mspace>\times <mspace\; width="1em"></mspace>{10}^9$

2. $3<mspace\; width="1em"></mspace>\times <mspace\; width="1em"></mspace>{10}^7$

3. $6<mspace\; width="1em"></mspace>\times <mspace\; width="1em"></mspace>{10}^8$

4. $6<mspace\; width="1em"></mspace>\times <mspace\; width="1em"></mspace>{10}^7$

The following ratio is generally constant for a given species:

Initiation codon in eukaryotes is:
1.  UGA
2.  CCA
3.  AGA
4.  AUG

During the replication of bacterial chromosomes, DNA synthesis starts from a replication origin site and:

1. Is facilitated by telomerase

2. Moves in one direction of the size

3. Moves in a bi-directional way

4. RNA primers are involved

After a mutation at a genetic locus, the character of an organism changes due to the change in:

1. DNA replication

2. Protein synthesis pattern

3. RNA transcription pattern

4. Protein structure 

Gene is composed of:
1.  Amino acids
2.  Polynucleotide
3.  Fatty acid
4.  Nitrogen bases

Which form of RNA has a structure resembling clover leaf?

In inducible operon, regulatory gene synthesizes:
1. Promoter
2. Operator
3. Repressor
4. Aporepressor

The similarity between DNA and RNA is that both:

1. are polymers of nucleotides

2. have a similar pyrimidine

3. have similar sugars

4. genetic material in all organism

Length of one loop of B-DNA:

1. 3.4 nm.

2. 0.34 nm.

3. 20 nm.

4. 10 nm