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

1. Fungus

2. Bacterium

3. Plant

4. Virus

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 

Select the correct Match:

1. Ribozyme - Nucleic acid

2. F2 × Recessive parent - Dihybrid cross

3. T.H. Morgan - Transduction

4. G. Mendel - Transformation

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

DNA fragments are

(1) positively charged

(2) negatively charged

(3) neutral

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

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

Which of the following RNAs should be most abundant in animals cell ?

(1) rRNA

(2) tRNA

(3) mRNA

(4) miRNA

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

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