NEET Zoology Biotechnology Principles and Processes Questions Solved

NEET - 2011

Agarose extracted from sea weeds finds use in

(a) tissue culture

(b) PCR

(c) gel electrophoresis

(d) spectrophotometry

Gel electrophoresis is a technique to separate fragments of DNA. Since DNA fragments are negatively charged molecules they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. Now-a-days the most commonly used matrix is agarose which is a natural polymer extracted from seaweeds (e.g., Gelidium, Gracilaria, Gigartina, etc.).

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