Introduction of  foreign genes for improving genotype is

1. biotechnology 

2. vernalization

3. tissue culture

4. genetic engineering

What limitation of traditional hybridization used for plant and animal breeding has been overcome by

the use of rDNA techniques?

1. High cost

2. Insertion of undesirable genes

3. Complexity of the procedure

4. Antigenicity of the product

The cutting of DNA at specific locations became possible with the discovery of 

(1) restriction enzymes

(2) probes

(3) selectable markets

(4) ligases

Plasmid vector in DNA recombinant technology means

1. a virus that transfers gene to bacteria

2. extra-chromosomal autonomously replicating circular DNA

3. sticky end of DNA

4. any fragment of DNA carrying desirable gene

To be useful in genetic engineering a vector must have

1. An origin for replication
2. Low copy number
3. Low rates of multiplication
4. Many cloning sites for the same enzyme

The names associated with construction of first Recombinant DNA are

a. Arber, Nathans, Smith

b. Annie Chang, Boyer, Berg, Cohen

c. Howard Temin, Brenner, Sharp

d. Tim Hunt, Hartwell, Nurse

If you transform a cell with an alien piece of DNA only, What is the possibility?

1.      This alien piece becomes a part of the host genome.

2.      It doesn't become a part of the host's genome but keeps on replicating

3.      The cloning of genes won't get affected in the absence of Origin of replication.

4.     Multiple identical copies of an alien piece of DNA can be formed irrespective of its integration into the host's genome.

Cohen and Boyer are known for which of the following discoveries?

1.      Antibiotic resistance gene

2.      Recombinant DNA

3.      Restriction Digestion

4.     Plasmid

What does cloning mean?

1.      The ability to multiply the desired gene in the host

2.      The ability to multiply the vector in the host

3.      The ability to multiply the antibiotic resistance gene in the host

4.     The ability to multiple Ori in the host

Consider the following statements:

Which of the above statements are true?