Class 12th Biology 2011 Set3 Delhi Board Paper Solution
Question 19
(a) Identify A and B illustrations in the following:
(b) Write the term given to A and C.
(c) Expand PCR. Mention its importance in biotechnology.
(a) Identify A and B illustrations in the following:
(b) Write the term given to A and C.
(c) Expand PCR. Mention its importance in biotechnology.
Answer
(a) Labelled part A is called sticky end.
Labelled part B is a foreign DNA inserted into a vector.
(b) The term used for A and C is palindromic sequence, they are named because they can be read from both forward and backward.
(c) PCR stands for Polymerase Chain Reaction. PCR is a technique used to amplify a gene or a piece of DNA to obtain its several copies, extensively used in gene manipulation.
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