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 alpha­ lactalbumin enriched.

$(B)$ Restriction enzymes are used in isolation of $DNA$ from other macromolecules.

$(C) $ Downstream processing is one of the steps of $rDNA$ technology.

$(D)$ Disarmed pathogen vectors are also used in transfer of $rDNA$ into the host.

Which of the two statements have mistakes ?

  • [AIPMT 2011]
  • A

    $B$ and $C$

  • B

    $C$ and $D$

  • C

    $A$ and $C$

  • D

    $A$ and $B$

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