If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be

Question

If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be (A) 5' - UAC - 3'  (B) 5'-CAU-3' (C) 5'-AUG-3'  (D) 5' - GUA - 3'

Tardigrade Admin · Accepted Answer

The first base of anticodon in 5' - 3' direction binds with the third base in codon (reading in 5' - 3' direction). Thus, if the base sequence in codon of mRNA is 5 - AUG - 3', the complementary anticodon will be 3 - UAC-5' or 5'-CAU-3'.

Q. If the base sequence of a codon in $m RN A$ is $5^{'} - A U G - 3^{'}$ , the sequence of $tRN A$ pairing with it must be

$5^{'} - U A C - 3^{'}$

$5^{'} - C A U - 3^{'}$

$5^{'} - A U G - 3^{'}$

$5^{'} - G U A - 3^{'}$

The first base of anticodon in $5^{'} - 3^{'}$ direction binds with the third base in codon (reading in $5^{'} - 3^{'}$ direction). Thus, if the base sequence in codon of $m RN A$ is $5 - A U G - 3^{'}$ , the complementary anticodon will be $3 - U A C - 5^{'}$ or $5^{'} - C A U - 3^{'}$ .

Q. If the base sequence of a codon in mRNA is 5′−AUG−3′, the sequence of tRNA pairing with it must be

5′−UAC−3′

5′−CAU−3′

5′−AUG−3′

5′−GUA−3′