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Question
Assertion :Wobbling reduces the number of t-RNA required for polypeptide synthesis. Reason: t-RNA anticodon has the ability to wobble at 5' end by pairing with even non-complementary base of m-RNA codon.
Assertion :Wobbling reduces the number of t-RNA required for polypeptide synthesis. Reason: t-RNA anticodon has the ability to wobble at 5' end by pairing with even non-complementary base of m-RNA codon.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Wobble hypothesis was proposed by Crick in 1966 to explain the degeneracy of genetic code. The degeneracy of codons accounts for the unequal distribution of different amino acids in a protein. According to this hypothesis, major degeneracy occurs at the third position whereas first two bases don't change. That third base is called wobble base. The pairing between an unusual base of t-RNA and wobble base of mRNA is called wobble pairing. Generally different codons for a particular amino acid have same first two letters. Thus, wobbling reduces the number of t-RNA molecules required for polypeptide synthesis. Hence, assertion is true.The anticodon of t-RNA at 5' end has the ability to pair with a non complementary base of m-RNA codon. Hence, reason is also true and it is correct explanation for assertion.So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
Wobble hypothesis was proposed by Crick in 1966 to explain the degeneracy of genetic code. The degeneracy of codons accounts for the unequal distribution of different amino acids in a protein. According to this hypothesis, major degeneracy occurs at the third position whereas first two bases don't change. That third base is called wobble base.
The pairing between an unusual base of t-RNA and wobble base of mRNA is called wobble pairing. Generally different codons for a particular amino acid have same first two letters. Thus, wobbling reduces the number of t-RNA molecules required for polypeptide synthesis. Hence, assertion is true.
The anticodon of t-RNA at 5' end has the ability to pair with a non complementary base of m-RNA codon. Hence, reason is also true and it is correct explanation for assertion.
So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
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