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1) A a very important technique used by biologists, known as Polymerase Chain Re

ID: 175968 • Letter: 1

Question

1) A a very important technique used by biologists, known as Polymerase Chain Reaction. Which statement below best conveys what this technique usually achieves?

a Copying of genomic DNA

b Copying of targeted regions of any RNA molecule

c Amplification of total nuclear DNA

d Amplification of only short targeted DNA regions

e None of the answers

2)

From where does cDNA come from?

a .The genomic DNA of a cell

b The nuclear DNA of a cell

c The mRNA of a cell

d The RNA of a celL

E None of these answers

From where does cDNA come from?

Explanation / Answer

1. Correct option is d. ie is amplication of short targated DNA regions. It is a procedure which amplify selected DNA region and make it available to study.

2. The correct option is c. ie it comes from messenger RNA of a cell.