Number of base pairs in human chromosomes are:

1. $3 \times {10}^9$

2. $3 \times {10}^7$

3. $6 \times {10}^8$

4. $6 \times {10}^7$

In a mutational event, when adenine is replaced by guanine, it is a case of:

1. Transcription

2. Transition

3. Transversion

4. Frameshift mutation

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?

1. hn-RNA

2. m-RNA

3. t-RNA

4. r-RNA

The molecular weight of DNA in yeast is:

1. $2.$ $56$ $\times$ ${10}^9$

2.  $0.5$ $$ $\times$ ${10}^9$

3. $7$ $\times$ ${10}^7$

4. $6$ $\times$ ${10}^6$

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