Q1 of 30 Page 1

Write the possible source of RNA interference (RNAi) gene.

RNA interference takes place in all eukaryotic organisms as cellular defense mechanism. In this process, specific mRNA gets silenced due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA.

The possible source of this complementary RNA could be from a viral infection where the virus is having RNA genomes or mobile genetic elements called transposons that replicate via an RNA intermediate.


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2

Which one of the following statements is true or yeast?

(a) The cell divides by binary fission. One of them develops into a bud.


(b) The cell divides unequally. The smaller cell develops into a bud.


(c) The cell produces conidia which develop into a bud.


 3

Name the specific components and the linkage between them that form deoxyadenosine.

 4

Write a professional approach at genetic level that can help the farmer to improve the milk yield of low milk producing cows on his farm.

 5

State what happens when an alien gene is ligated at Sal I site of pBR 322 plasmid.