Question

Question #b9b94

Answer 1

It works with Codons:

Explanation:

4 different bases: A, C, G and T in DNA.
Translated in Messenger RNA: U, G, C and A.

3 bases for 1 AA,

`rarr 4 xx 4 xx 4 = 64" "` possible combinations.

3-base sequences are called CODONS, and are the info that the ribosome needs to incorporate the right AA.

The AA's are brought to the ribosome by tRNA's (Transfer-RNA's)

The AA that they bring to the ribosome corresponds with the (anti-)codon they carry at their front...

Codon-table :

3 is the minimum required for 20 different possibilities:

• `2` bases:

`4xx4 = 16`, this is not enough choice for `20` AA's;

• `4` bases:

Superfluous, not needed...