Can we recreate the way caterpillars morph into a butterfly and then evolve other animals or maybe humans

The recreation can be done by the process of CRISPR-Cas9 editing of gene.

Explanation:

The gene editing process is executed by Whiteman and his co-workers of California University by transforming fruit flies into a poisonous species. The monarch butterflies were made to undergo the process of this mutation of gene and were made eat milkweed of toxic category.

Through this process 3 CRISPR were edited to one gene to make a monarch caterpillar to eat milkweed. He was influenced by the evolutionary war between plants and insects which thrive him to discover this process.  

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?