Question

RNA interference involves
(А) Synthesis of cDNA and RNA using reverse transcriptase
(B) Silencing of specific mRNA due to complementary RNA
(C) Interference of RNA in synthesis of DNA
(D) Synthesis of mRNA from DNA.

Answer 1

Hint:The process within which RNA inhibits and stops the organic phenomenon by neutralizing the targeted mRNA molecules is defined as RNA molecules interference. This process of RNA interference was discovered by two American scientists Craig C and Andrew Z.

Complete answer:
To answer this question first we should know what RNA Interference is that it is defined as an evolutionarily conserved mechanism triggered by double-stranded RNA that uses the gene's DNA sequence to show it off. This process is thought of as gene silencing It is a gene regulatory mechanism that limits and controls the amount of transcript in two ways.
i) Suppressing transcription
ii) Degrading the RNA produced

Now let us find answer from the options given:
(А) Synthesis of cDNA and RNA using reverse transcriptase : RNA transcription is the process in which complementary DNA is generated from RNA and it is a retroviral process.
(B) Silencing of specific mRNA due to complementary RNA : RNA interference is defined as the process in which silencing of messenger RNA occurs.
(C) Interference of RNA in synthesis of DNA : interference of RNA does not take place in the synthesis of DNA.
(D) Synthesis of mRNA from DNA : the synthesis of messenger RNA from DNA is termed as transcription and this takes place in the nucleus.

Hence the correct answer is option ‘B’ i.e, Silencing of specific mRNA due to complementary RNA.

Note:RNA interference is usually accustomed and used to study the functions of genes in cell culture and model organisms. This mechanism is used to scale back the expression of the targeted gene. This technique is used for gene mapping and annotation in plants. It has used for the studies in wheat bread.