Look at the following mutation: AUG-GUC-CCU-AAA → AUG-AGU-CCC-UAA-A. The base A was inserted following the start codon AUG. Describe how this mutation affects the encoded amino acid sequence.

Non sense mutation took place over here.

Explanation:

Mutation took place over here where, the base A was inserted in place of the start codon AUG.

This states that the last codon will code for a stop signal instead of amino acid.

This is a type of non sense mutation when the ribosome is stopped from reading a stretch of mRNA because a stop codon is present over there.

The original set of codon is replaced by the stop codon and the protein synthesis is stopped.

i thinking chemical change

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.