MCQ
What is the function of the polymerase chain reaction in genetic engineering?
- ACut DNA into many fragments
- BCarry DNA into a new cell
- CLink together newly joined fragments of DNA
- DMake millions of copies of a specific segment of DNA
Explanation:
Polymerase Chain Reaction is a method widely used to make many copies of a specific DNA segment. Using PCR, a single (or more) copy of a DNA sequence is exponentially amplified to generate thousands to millions of more copies of that particular DNA segment.
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| Column $- I$ | Column $- II$ |
| $(a)$ Allergy | $(1)$ Malaria |
| $(b)$ Widal test | $(2)\; AIDS$ |
| $(c)\; ELISA$ test | $(3)$ Typhoid fever |
| $(d)$ Haemozoin | $(4)\; IgE$ antibodies |
$I$. Maintaining the ecological process.
$II$. To enrich the wild life diversity with exotic species.
$III$. Preventing migration of species.
$IV$. Maintaining the diversity of life.
The correct statement are