The first human hormone produced by recombinant DNA technology is 

• insulin

• estrogen

• thyroxin

• thyroxin

An analysis of chromosomal DNA using the Southern hybridization technique does not use

• electrophoresis

• blotting

• autoradiography

• autoradiography

Removal of RNA polymerase -III from nucleoplasm will affect the synthesis of

• tRNA

• rRNA

• mRNA

• mRNA

PCR and Restriction Fragment Length Polymorphism are the methods for

• Study of enzymes

• Genetic transformation

• DNA sequencing

• DNA sequencing

Which one of the following is not a part of a transcription unit in DNA?

• The inducer

• A terminator

• A promoter

• A promoter

A single strand of nucleic acid tagged with a radioactive molecule is called

• vector

• selectable marker

• plasmid

• plasmid

Ribosomal RNA is actively synthesised in 

• lysosomes

• nucleolus

• nucleoplasm

• nucleoplasm

• It is used to ligate introduced DNA in recipient cells

• It serves as a selectable marker

• It is isolated from a virus

• It is isolated from a virus

Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it

• Category                       Component
  Nucleoside                         Uracil
  
  
• Category                       Component
  Cholesterol                       Guanin
• Category                       Component
  Amino acid                       NH₂
• Category                       Component
  Amino acid                       NH₂

20.

Removal of introns and joining of exons in a defined order during transcription in called

• looping

• inducing

• slicing

• slicing