Q. Which sequence of codons specifies for leucine-threonineproline?
Molecular Basis of Inheritance
Solution:
A particular $mRNA$ codon codes for a particular amino acids. As there are $64$ codons and only $20$ amino acids thus more than one codon can code for a single amino acids.
Amino acid
Codons
(i)
Leucine
CUU, CUC, CUA, CUG, UUA, UUG
(ii)
Threonine
ACU, ACC, ACA, ACG
(iii)
Proline
CCU, CCC, CCA, CCG
| Amino acid | Codons | ||
|---|---|---|---|
| (i) | Leucine | CUU, CUC, CUA, CUG, UUA, UUG | |
| (ii) | Threonine | ACU, ACC, ACA, ACG | |
| (iii) | Proline | CCU, CCC, CCA, CCG | |