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

DNA fragments are

(1) positively charged

(2) negatively charged

(3) neutral

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

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

Spliceosomes are not found in cells of 

(1) plants

(2) fungi

(3) animals 

(4) bacteria

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 

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

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

The equivalent of a structural gene is

(1) muton

(2) cistron

(3) operon

(4) recon

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