Transduction in bacteria is carried out by:
1.  Bacteriophage
2.  B.G.A.
3.  Mycoplasma
4.  Rickettsiae

Variations in proteins are due to:
1.  Sequence of amino acids
2.  Number of amino acids
3.  R–group
4.  None

Segments of DNA which can move in a genome:
1.  Transposons
2.  Introns
3.  Exons
4.  Cistrons

A sequence of how many nucleotides in messenger RNA make a codon for an amino acid:

1. Four

2. One

3. Two

4. Three

In transgenics expression of a transgene in the target tissue is determined by:

1. Transgene

2. Promoter

3. Reporter

4. Enhancer 

DNA fingerprinting refers to:

During transcription, if the nucleotide sequence of the DNA strand that is being coded is ATACG, then the nucleotide sequence in the mRNA would be:

1. TCTGG

2. UAUGC

3. UATGC

4. TATGC

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: