Multiple Choice QuestionsDNA sequences that code for protein are known as
introns
exons
control regions
intervening sequences
Short Answer TypeMultiple Choice QuestionsOut of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangement called
tautomerisational mutation
analogue substitution
point mutation
frameshift mutation
A.
tautomerisational mutation
In the early 1950s, guanine and thymine were generally portrayed in the enol form, although there was little data to support the predominance of one form over the other. James Watson and Francis Crick discovered that by using the keto forms instead of the enol forms, they could "form" two base pairs, an adenine thymine pair and a guanine-cytosine pair, that had the same overall size and shape. These base pairs formed the basis for Watson and Crick's model of DNA.
The process of changing keto form in to enol form of a given organic compound is known as tautomerisational mutation.
The chemical nature of chromatin is as follows
nucleic acids
nucleic acid and histone proteins
nucleic acids, histone and non-histone proteins
nucleic acids and non-histone proteins
What will be the codons in mRNA if the DNA codes are ATG - CAG?
TAC - GTC
UAC - GUC
UCA - TUA
TCA - GTC
Melting of DNA at an elevated temperature (70°C) is primarily due to the breakdown of
phosphodiester bonds
glycosidic bonds
disulphide bonds
hydrogen bonds
A-DNA is
left-handed helix with 12 nucleotide pairs per turn
right-handed helix with 11 nucleotide pairs per turn
right handed helix with 12 nucleotide pairs per turn
left-handed helix with 11 nucleotide pairs per tum
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