"Cells in the lining of the stomach produce a protein called pepsinogen. When this protein is released into the chamber of the stomach, the stomach acid cleaves off a section of the protein, which now becomes an enzyme called pepsin. In this form, pepsin will actively begin the breakdown of proteins in food." This is an example of which type of eukaryotic gene regulation?

Precursor gene regulation (protein translation)

Explanation:

Precursor. Pepsin is expressed as a zymogen called pepsinogen, whose primary structure has an additional 44 amino acids. In the stomach, chief cells release pepsinogen. This zymogen is activated by hydrochloric acid (HCl), which is released from parietal cells in the stomach lining.

answer; a male inherits only one allele of the x-linked gene controlling hair color;

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles