Molecular Basis of Inheritance Quiz 2

If the base sequence in DNA is 5′ AAAA 3′, then the base sequence in m-RNA is …………

During capping, methylated guanosine tri-phosphate is added to 5′ end of …………

If each codon has two nucleotides, then there will be ……………….. codons, which can encode for only …………….. different types of amino acids.

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA?

A strand of DNA has following base sequence – 3′ AAAAGTGAATAGTGA 5′. On transcription it produces an m-RNA. Which of the following anticodon of t-RNA recognizes the third codon of this m-RNA?

Polynucleotide chain consisting of only CUA repeats will give polypeptide chain with only one amino acid ………

Select the INCORRECT statement.

……… is/are based on complementarity principle.

Cysteine has codons, while isoleucin has ……………….. codons.

Out of 64 codons, only 61 code for the 20 different amino acids. This is known as ……………….. of genetic code.