Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
ZoologyMolecular Basis of InheritancetRNA and TranslationEasy2 minPYQ_2020
ZoologyEasysingle choice
Observe the following messenger RNA:
Due to a mutation, the guanine nucleotide in the sixth position is replaced by an adenine nucleotide. What will the correct effect on the sequence of amino acids due to this mutation?
Options:
Answer:
A
Solution:
Original mRNA is 5' AUG GGG AAA CCC UUU UAA 3'
The sequence of amino acids coded by this mRNA is Methionine - Glycine - Lysine - Proline- Phenylalanine.
Mutated mRNA 5' AUG GGA AAA CCC UUU UAA 3'
The sequence of amino acids coded by this mRNA is Methionine - Glycine - Lysine - Proline- Phenylalanine. Since GGG and GGA both code for the same amino acid glycine, there is no change in the sequence. This is called Silent mutation. It occurs due to degeneracy of codons.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Molecular Basis of InheritanceSubtopic:tRNA and Translation
⏱ 2mℹ️ Source: PYQ_2020
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