Biology : Molecular Basis of Inheritance

Which one of the following codons codes for the same information as UGC?

• UGU

• UGA

• UAG

• UGG

Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it

• UUA - valine

• AUG - cysteine

• AAA - lysine

• CCC - alanine

DNA polymerase enzyme is required for synthesis of

• DNA from RNA

• RNA from DNA

• DNA from DNA

• RNA from RNA

In split genes the coding sequences are called

• introns

• exons

• cistrons

• operons

Which one of the following correctly represents the manner of replication of DNA?

Which type of DNA is found in bacteria

• Helical DNA

• Membrane bound DNA

• Straight DNA

• Circular free DNA

Lac is obtained from :

• Laccifer

• Bombyx

• Dactylopius

• Lytta

Mutations which alter nucleotide sequence within a gene are :

• frame shift mutations

• base pair substitutions

• both 'a' and 'b'

• none of these

Which one of the following pairs of terms/ names mean one and the same thing?

• Gene pool - genome

• Codon - gene

• Cistron - triplet

• DNA fingerprinting - DNA profiling

What is true about tRNA?

• It binds with an amino acid at it 3' end

• It has five double stranded regions

• It has a codon at one end which recognizes the anticodon on messenger RNA

• It looks like clover leafin the three dimensional structure