Structure of DNA
Two ‘polynucleotides’ are not identical, but:
Complementary to each other due to phosphate
Complementary to each other due to base pairs
Complementary to each other due to hydrogen bonding
Complementary to each other due to carbon cycle
Complementary to each other due to base pairs
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In DNA, each turn of helix is nearly:A. 3.3 nm
B. 4.4 nm
C. 3.4 nm
D. 2.5nm
Double ‘helical’ structure of DNA was identified in:
A. 1987
B. 1954
C. 1953
D. 1955
‘DNA’ is:
A. Left-handed double helix
B. Right-handed double helix
C. Circular
D. Double stranded
Distance between two neighbouring base pairs is, approximately:
A. 3.4ร
B. 2.4ร
C. 4.4ร
D. 4.9ร
Double helical structure of DNA was coined by:
A. James Watson
B. Francis Crick
C. Watson and Crick
D. Kuhne
Strand on which genetic information reside is called:
A. Antisense strand
B. Template strand
C. Sibling strand
D. Genotypes
Number of hydrogen bonds in adenine and thymine is:
A. 2
B. 4
C. 3
D. 6
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