(a) State the role of DNA ligase in biotechnology.
(b) What happens when Meloidegyne incognitia consumes cells with RNAi gene? (2)
(a) Role of DNA ligase: Joining of DNA fragments end to end, having same kinds of sticky ends.
(b) When Meloidegyne incognitia consumes cells with RNAi gene, silencing of specific mRNA occurs due to a complementary dsRNA molecule formation that binds to prevent translation of mRNA. It causes death to the nematode. (2)