Answer:
it is option - B - An abandoned field
It is caused by mutations in the gene that helps an enzyme called phenylalanine hydroxylase, or PAH. <span />
Below are the choices:
(1) a nucleus
<span>(2) a chromosome </span>
<span>(3) a protein molecule </span>
<span>(4) an enzyme molecule
</span>
In the nucleus. However since chromosomes are in the Nucleus they contain the <span>DNA a cell needs to survive. This is why it is in the Nucleus.
</span>
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
To calculate the mass of a single atom, you would need to add up the protons and neutrons of a single atom.
