Antiparallel strands of a DNA molecule means that:

(1) one strand turns anti-clockwise

(2) the phosphate groups of two DNA strands, at their ends, share the same position

(3) the phosphate groups at the start of two DNA strands are in opposite position (pole)

(4) one strand turns clockwise

Subtopic:  DNA Double Helix |
 84%
From NCERT
NEET - 2006
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Complete genomic sequence of the following plant has been recently announced is

(1) Arabidopsis thaliana

(2) Tritium vulgare

(3) Cucurbita pepo

(4) Pisum sativum

Subtopic:  Human Genome Project |
 64%
From NCERT
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Okazaki fragments are proportions of DNA

(1) synthesized on the leading strand of DNA replication fork

(2) synthesized on the lagging strand of DNA replication fork

(3) produced during the digestion of DNA by restriction endonucleases

(4) none of the above

Subtopic:  DNA Replication:III | DNA Replication |
 90%
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Transcription in case of eukaryotes takes place in

(1) nucleus

(2) nucleolus

(3) cytoplasm

(4) ribosome

Subtopic:  Transcription: IV | Transcription |
 69%
From NCERT
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Which of the following banding group is used in staining both plant and animal chromosome?

(1) C-group

(2) G-group

(3) R-group

(4) N-group

Subtopic:  DNA Packaging |
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Which of the following is nonsense codon?

(1) UAG

(2) UAA

(3) UGA

(4) all the above

Subtopic:  Genetic Code: III | Genetic Code |
 93%
From NCERT
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Frameshift mutation occurs when

(1) base is substituted

(2) base is deleted or added

(3) anticodons are absent

(4) none of these

Subtopic:  Genetic Code: II | Genetic Code |
 86%
From NCERT
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Wobble hypothesis was given by

(1) R.W. Holley

(2) M. Nirenberg

(3) H.G. Khorana

(4) F.H.C. Crick

Subtopic:  DNA Double Helix |
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Which one of the following pairs of terms / names mean one and the same thing?

(1) Gene pool - genome

(2) Codon – gene

(3) Cistron – triplet

(4) DNA fingerprinting - DNA profiling

 

Subtopic:  DNA Fingerprinting |
 64%
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What is true about tRNA?

(1) It binds with an amino acid at it 3’ end

(2) It has five double stranded regions

(3) It has a codon at one end which recognizes the anticodon on messenger RNA

(4) It looks like clover leaf in the three dimensional structure.

Subtopic:  Translation |
 52%
From NCERT
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