If there are 999 bases in an RNA that codes for a protein with 333 amino acids and the base at position 901 is deleted such that the length of teh RNA becomes 998 bases, how many codons will be altered?

(1) 1

(2) 11

(3) 33

(4) 333

Subtopic:  Translation Mechanism |
 68%
NEET - 2017
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DNA fragments are

(1) positively charged

(2) negatively charged

(3) neutral

(4) either positively or negatively charged depending on their size

Subtopic:  The DNA |
 90%
From NCERT
NEET - 2017
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During DNA replication, Okazaki fragments are used to elongate

(1) The leading strand towards replication fork

(2) The lagging strand towards replication fork

(3) The leading strand away from replication fork

(2) The lagging strand away from replication fork

Subtopic:  DNA Replication:III | DNA Replication |
 56%
NEET - 2017
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The final proof for DNA as the genetic material come from the experiments of 

1. Griffith

2. Hershey and chase 

3. Avery, Macleod and McCarty 

4.  Hargobind Khorana 

Subtopic:  Search for Genetic Material:I | Search for Genetic Material: II | Search for Genetic Material |
 85%
From NCERT
NEET - 2017
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The association of histone H1 with a nucleosome indicates 

(1) transcription is occuring

(2) DNA replication is occuring

(3) the DNA is condensed into chromatin fibre

(4) the DNA double helix is exposed

Subtopic:  DNA Packaging |
 86%
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NEET - 2017
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Taylor conducted the experiments to prove semi-conservative mode of chromosome replication on

(1) Vinca rosea

(2) Vicia faba

(3) Drosophila melanogaster

(4) E. coli

Subtopic:  DNA Replication: I | DNA Replication |
 84%
From NCERT
NEET - 2016
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The equivalent of a structural gene is

(1) muton

(2) cistron

(3) operon

(4) recon

Subtopic:  Transcription: III | Transcription |
 82%
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NEET - 2016
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Which of the following rRNAs act as structral RNA as well as ribozyme in bacteria ?

(1) 5 srRNA

(2) 18 srRNA

(3) 23 srRNA

 (4) 58 srRNA

 

Subtopic:  Translation Mechanism |
 77%
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NEET - 2016
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A molecule that can act as a genetic material must fulfill the traits given below, except

(1) it should be able to express itself in the form of 'Mendelian characters'

(2) it should be able to generate its replica

(3) it should be unstable structurally and chemically

(4) it should provide the scope for slow changes that are required for evolution

Subtopic:  DNA vs RNA as Genetic Material |
 90%
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NEET - 2016
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DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the 

(1) template strand

(2) coding strand

(3) alpha strand

(4) anti strand

Subtopic:  Transcription:II | Transcription |
 82%
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NEET - 2016
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