Genetics

Which molecule contains the genetic code?

• DNA

• mRNA

• tRNA

• rRNA

RNA contains the sugar

• ribose

• deoxyribose

• glucose

• lactose

The anti-codon

• contains a sequence the same as the codon

• contains a sequence complementary to the codon 

• contains the base thymine

Amino acids are joined together in order to form

• DNA

• ribosomes

• proteins 

• RNA

Which sequence could be found in RNA?

• ACCTGT

• CGCATT

• AUGCUU

How many bases are in one codon?

• 1

• 2

• 3

• 4

The factors or agents that cause mutation are called as

• Mutagens

• Mutation

• Mutants

. 

Each three-letter sequence of mRNA nucleotide corresponds to a specific amino acid, or to a stop codon. The following are the stop codons except

• UGA

• UAA

• UAG

• AUG

Outcomes of point mutations include

• missense mutation

• nonsense mutation

• silent mutation

• all of the above

Which of the following mechanisms will remove uracil and incorporate the correct base?

• Direct repair

• Base excision repair

• Mismatch repair

• Nucleotide excision repair