Home Biology Biotechnology Principles and Processes Processes of Recombinant DNA Technology In isolation of genetic material, chemical u…
Biology Biotechnology Principles and Processes Processes of Recombinant DNA Technology Single Correct MCQ
Published on: August 21, 2026

In isolation of genetic material, chemical used to precipitate out the purified DNA is

A
Bromophenol blue &
B
Chilled ethanol
C
Ethidium bromide
D
Both

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Text Solution

Verified by Experts
The correct answer is:
B

After DNA is purified, chilled ethanol (or ice-cold ethanol/isopropanol) is added to precipitate the DNA, making it visible as white threads.

Bromophenol blue → tracking dye in electrophoresis

Ethidium bromide → DNA staining dye

Chilled ethanol → DNA precipitation

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