UP Board Biology Book Class 12. We covered all the UP Board Biology Book Class 12 MCQs in this post for free so that you can practice well for the exam.
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UP Board Biology Objective Book QnA for Class 12 Students
The formation of RNA (mRNA) over a DNA template is called
(a) translation
(b) transcription
(c) reverse transcription
(d) initiation
Option b – transcription
Which of the following features of DNA makes it unequally suited to store and transmit genetic information from generation to generation?
(a) Complementarity of the two strands
(b) Double helix
(c) Number of base pairs per turn
(d) Sugar-phosphate backbone
Option b – Double helix
The number of DNA molecules per chromatid is
(a) one
(b) two
(c) three
(d) four
Option b – two
The nucleosome is
(a) histone proteins
(b) DNA wrapped around histones
(c) RNA wrapped around histones
(d) DNA wrapped around acidic protein
Option b – DNA wrapped around histones
In prokaryotes, multiple ribosomes (polysomes) participate in
(a) translation process
(b) transcription process
(c) linkage
(d) crossing over
Option a – translation process
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