Frameshift mutation occurs when

1. base is substituted

2. base is deleted or added

3. anticodons are absent

4. none of these

What is true about tRNA?

1. It binds with an amino acid at it 3’ end

2. It has five double stranded regions

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

4. It looks like clover leaf in the three dimensional structure.

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

1. UGU

2. UGA

3. UAG

4. UGG

The total number of nitrogenous bases in human genome is estimated to be about

1. 3.5 million

2. 35 thousand

3. 35 million

4. 3.1 billion

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

1. UUA - valine

2. AAA - lysine

3. AUG - cysteine

4. CCC - alanine

During portein synthesis in an organism at one point the process comes to a halt. Select the group of the three codons from the following, from which any one of the three colud bring about this halt.

1. UUU, UCC, UAU

2. UUC, UUA, UAC

3. UAG, UGA, UAA

4. UUG, UCA, UCG

Which of the following is correct regarding genetic code?

1. UUU is the initiation codon which also codes for phenylalanine.

2. There are 64 triplet codons and only 20 amino acids.

3. Three random nitrogen bases specify the placement of one amino acid.

4. UAA is the nonsense codon which also codes for methionine.

Which of the following set of options is used in translation?

1. hnRNA, tRNA, rRNA

2. mRNA, tRNA, rRNA

3. mRNA, tRNA, hnRNA

4. hnRNA, rRNA, tRNA

If the sequence of bases in the coding strand of a double stranded DNA is 5’-GTTCGAGTC-3’, the sequence of bases in its transcript will be

1. 5’-GACUCGAAC-3’

2. 5’-CAAGCUCAG-3’

3. 5’-GUUCGAGUC-3’

4. 5’-CUGAGCUUG-3’

Match the triplet codons listed in column I with their amino acids mentioned in column II and select the correct option from the given codes.

1. A-(v), B-(iii), C-(i), D-(ii)

2. A-(v), B-(iii), C-(i), D-(iv)

3. A-(ii), B-(iv), C-(i), D-(v)

4. A-(i), B-(ii), C-(iii), D-(iv)