NEET UG 2011 — Biotechnology - Principles and Processes

Agarose extracted from sea weeds finds use in

Read the following four statements (I-IV) about certain mistakes in two of them I. the first transgenic buffalo, Rosie produced milk which was human alpha-lactal bumin 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?

Which one of the following also acts as a catalyst in a bacterial cell?

There is a restriction endonuclease called $E c o$ RI. What does 'co' part in it stand for?

Given below is a sample of portion of DNA strand giving the base sequence on the opposite strands. What is so, special shown in it? $5^{\prime} \_$GAATTC __ $3^{\prime}$ 3 - CTTAAG $5^{\prime}$