3rd October 2019

scientificamerican
16

What is the role of the gel electrophoresis in DNA fingerprinting?

"DNA is a charged molecule. Consequently, DNA molecules will move when an electrical field is applied to a liquid in which they are dissolved. Each of these bands contains DNA strands of a specific size." [Editors note: DNA fingerprinting uses gel electrophoresis to distinguish between samples of the genetic material.

Likewise, people ask, what is the role of agarose in gel electrophoresis?

Agarose gel electrophoresis separates DNA fragments according to their size. An electric current is used to move the DNA molecules across an agarose gel, which is a polysaccharide matrix that functions as a sort of sieve. The matrix helps "catch" the molecules as they are transported by the electric current.

What does the gel do in gel electrophoresis?

Gel electrophoresis is a laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size. In gel electrophoresis, the molecules to be separated are pushed by an electrical field through a gel that contains small pores.

What is the function of the wells in the gel in gel electrophoresis?

Gel electrophoresis is a technique used to separate DNA fragments according to their size. DNA samples are loaded into wells (indentations) at one end of a gel, and an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode.
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