The experimental proof for semiconservative replication of DNA was first shown in a:

1. Fungus

2. Bacterium

3. Plant

4. Virus

Subtopic:  DNA Replication |
 87%
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Select the correct match:

1. Alec Jeffreys – Streptococcus pneumoniae

2. Alfred Hershey and Martha Chase – TMV

3. Matthew Meselson and F. Stahl – Pisum sativum 

4. Francois Jacob and Jacques Monod – Lac operon 

Subtopic:  Gene Regulation: Lac Operon |
 87%
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Select the correct Match:

1. Ribozyme - Nucleic acid

2. F2 × Recessive parent - Dihybrid cross

3. T.H. Morgan - Transduction

4. G. Mendel - Transformation

Subtopic:  Translation Mechanism |
 75%
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AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

1. AGGUAUCGCAU 2. UGGTUTCGCAT
3. ACCUAUGCGAU 4. UCCAUAGCGUA

Subtopic:  Transcription |
 62%
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All of the following are part of an operon except:
1. an operator
2. structural genes
3. an enhancer
4. a promoter
Subtopic:  Gene Regulation: Lac Operon |
 88%
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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%
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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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Which of the following RNAs should be most abundant in animals cell ?

(1) rRNA

(2) tRNA

(3) mRNA

(4) miRNA

Subtopic:  Transcription: III | Transcription |
 64%
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The final proof for DNA as the genetic material came from the experiments of:

1. Hershey and chase

2. Avery, McLeod and McCarty

3. Har Gobind Khorana

4. Griffith

Subtopic:  Search for Genetic Material |
 83%
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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 the RNA becomes 998 bases, how many codons will be altered?

1. 11

2. 33

3. 333

4. 1

Subtopic:  Genetic Code |
 73%
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