Ligase

Q.

Red cell count is carried out by

1. Haemocytometer

2. Electrocardiogram

3. Haemoglobinometer

4. Sphygmomanometer

Q.

A complete meiosis always involves

1. Reduction of chromosome twice

2. Karyokinesis twice

3. Cytokinesis twice

4. Divisions of chromosomes twice

Q. Blunt ends of passenger and vehicle DNAs are joined by

1. DNA polymerase I
2. RNA polymerase
3. DNA ligase
4. DNA polymerase III

Q. Assertion (A): DNA ligase plays an essential role in recombinant DNA technology.
Reason (R): The linking of antibiotic resistance genes with plasmid vectors became possible by enzyme DNA ligase.

1. Both A and R are false
2. A is true but R is false
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is not the correct explanation of A

Q. What is MN blood group?

Q. The linking of antibiotic resistance gene with the plasmid vector became possible with:

1. DNA polymerase
2. Exonucleases
3. DNA ligase
4. Endonucleases