Read the following four statements (A-D) about certain

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Read the following four statements (A-D) about certain mistakes in two of them
(A) The first transgenic buffalo, Rosie produced milk which was human alphalactal albumin enriched.
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules.
(C) Downstream processing is one of the steps of R-DNA technology.
(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host.
Which are the two statements having mistakes?

1. Statement (B) and (C)
2. Statement (C) and (D)
3. Statement (A) and (C)
4. Statement (A) and (B)

Correct Option: D

Transgenic Rosie is actually cow. Restriction enzymes cut the DNA at specific sites.