Below is the sequence from the 3' end of an mRNA. 5'--3'
If you were told that this sequence contains the stop codon for the protein encoded by this mRNA, what is the anticodon on the tRNA in the P site of the ribosome when release factor binds to the A site?
(a) 5'-CCA-3
(b) 5'-CCG-3'
(c) 5-UGG-3
(d) 5'-UUA-3'

The correct answer is a) 5′-CCA-3′.

Explanation:

It is given that in the given mRNA sequence there is a stop codon for the protein it forms, the sequence from the 3' end of mRNA is -

5'--3'

Making triplet codes from 3' end -

5'-CC GUU ACC AGG CCU CAU UAU UGG UAA CGG AAA AAA AAA AAA AAA-3'

In this UAA is the stop codon and 5'-UGG-3' is the codon adjacent to stop codon UAA in the mRNA sequence which will be present at P-site in the mRNA sequence so the anticodon will be the corresponding anticodon for 5'-UGG-3' is 3'-ACC-5' or simply 5'-CCA-3'.

ok

explanation:

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.