Read the following four statements ( i-iv) and answer the question?
(i) The first transgenic buffalo, Rosie produced milk which was human alpha-lactal albumin enriched.
(ii) Restriction enzymes are used in isolation of DNA from other macro-molecules.
(iii) Downstream processing is one of the steps of R-DNA technology.
(iv) Disarmed pathogen vectors are also used in transfer of R-DNA into the host.
Which are the two statements having mistakes?
Text Solution
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(i) Incorrect → The first transgenic cow Rosie (not buffalo) produced milk enriched with human alphalactalbumin.
(ii) Incorrect → Restriction enzymes are used to cut DNA at specific sites, not for the isolation of DNA from other macromolecules.
(iii) Correct → Downstream processing is an important step in recombinant DNA (r-DNA) technology.
(iv) Correct → Disarmed pathogen vectors are used to transfer recombinant DNA into the host.
Therefore, the two incorrect statements are (i) and (ii).
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