Q4 of 30 Page 1

Give the name of the carcinogenic dye which is used to stain gel to make the DNA visible under UV light.

In gel electrophoresis, the separated DNA fragments are stained with a compound called Ethidium Bromide (EtBr) followed by exposure to UV radiation. This causes visibility of orange coloured bands of DNA.


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2

Write the formula to calculate allele frequency in future generations according to Hardy - Weinberg genetic equilibrium.

 3

“Pranay suffered from measles at the age of 10 years. There are rare chances of his getting infected with the same disease for the rest of his life.” Give reason for the statement.

 5

Which main technique and instrument is used to isolate DNA from a plant cell?

 6

How is the action of normal endonuclease enzymes different from that of restriction endonucleases?