141.

A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is

• 60

• 240

• 120

• 480

Gel electrophoresis is used for

• Cutting of DNA into fragments

• Separation of DNA fragments according to their size

• Construction of recombinant DNA by joining with cloning vectors

• Isolation of DNA molecule

Polysome is formed by

• Several ribosomes attached to a single mRNA

• Many ribosomes attached to a strand of endoplasmic reticulum

• A ribosome with several sub-units

• Ribosomes attached to each other in a linear arrangement

The product of biotechnology is

• transgenic crops (GM crops)

• humulin

• biofertilizer

• All of the above

Width of the DNA molecule is

• 15 A^o

• 20 A^o

• 25 A^o

• 34 A^o

The protein α-1 antitrypsin is used to treat which of the following disease?

• Cancer

• Rhematoid arthritis

• Emphysema

• ADA deficiency disease in children

The dominant epistasis ratio is

• 9:3: 3:1

• 12:3:1

• 9:3:4

• 9:6:1

Bacillus thuringiensis (Bt) strains have been used for designing novel

• Bio metallurgical technique

• Bio mineralization process

• Bio Insecticidal Plants

• Bio Fertilizers

Bacillus thuringiensis (Bt) strains have been used for designing novel

• bio metallurgical technique

• bio mineralization process

• bio insecticidal plants

•  bio fertilizers

In recombinant DNA technique, the term vector refers to

• Donor DNA, is identified and picked up through electrophoresis

• Plasmid transfers DNA into living cell

• Collection of the entire genome in form of plasmid

• Enzyme, cuts the DNA at specific sites