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 ?

Which of the following is a transgenic plant?

Gene therapy is an attempt to correct a genetic defect by providing a normal gene into the individual. By this the normal function can be restored. An alternate method would be to provide the gene product (protein/enzyme) known as enzyme replacement therapy, which would also restore the function. Which in your opinion is a better option ? Give reason for your answer.

A distinct mechanism that usually involves a short segment of $DNA$ with remarkable capacity to move from one location in a chromosome to another, this is called

Anand Chakrabarty has used biotechnology for