Match items in Group I with correct options from those given in Group II.

Group I	Group II
P. VNTR sequence	1. Gene regulation on the same chromosome
Q. Leader sequence	2. Ribosome binding site
R. SD sequence	3. DNA fingerprinting
S. cis-acting sequence	4. Functions in attenuation

Expression of hundreds of different genes in DNA microarray technology is monitored by using

Identical sized RNA transcript is detected by Northern blot analysis of UDP glucuronosyl transferase obtained from human liver and kidney. Microarray analysis of the same samples shows equal spot intensity, whereas Western blot detects a 55 kDa strong band in liver, but a very faint in kidney of same size. The regulation of UDP glucuronosyl transferase is

Which one of the following techniques/tools is not used for inserting a foreign gene into a cell?

Which one of the following techniques can be used to compare the expression of a large number of genes in two biological samples in a single experiment?