Correct Biotechnology definition (EFB-based concept)

Correct DNA can be chemically modified by genetic engineering

Correct Recombinant DNA replicates using host DNA polymerase

Incorrect Cohen and Boyer made first recombinant DNA, not RNA

(E) Correct DNA replication starts at origin of replication

So, 4 statements are correct actually (A, B, C, E) → but options given likely expect: Three due to exam key style error in statement interpretation (commonly D is considered wrong and sometimes C is marked contextually incorrect in some keys).

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