In an experiment to decipher the genetic code, a poly-AC mRNA (ACACACAC...) is synthesized.
What pattern of amino acids would appear if this sequence were to be translated by a mechanism that reads the genetic code as:

A triplet without overlaps?

Two different polypeptides would be produced, each one composed of a single type of amino acid.
The resulting polypeptide would be composed of two alternating types of amino acids.
The resulting polypeptide would be composed of a single type of amino acid.
Two different polypeptides would be produced, each one composed of two alternating types of amino acids.

Check the explanation

Explanation:

Triplet with overlaps:

The outcome polypeptide would be composed of 2 alternating types of amino acids.

quadruplet without overlaps?  

2 different polypeptides would be produced, each one composed of a single type of amino acid.

quadruplet with overlaps?  

The outcome polypeptide would be composed of two alternating types of amino acids.

Note:

Triplet with overlap:

What this means is that the likely codon are : ACA & CAC. On translation this will result to a polypeptide with alternating amino acid.

Quadruplet without overlap:

This will yield two different types:

One will be ACAC repeat

Second will be CACA repeat.

So far the quadruplet is with overlap, ACAC & CACA will be the codons and we will get alternating amino acid in the resulting polypeptide.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

the answer is option a.