1. Modifies, sorts and packages
proteins ("the mailman")

Gene mutation

I found this in nature.com, “If a mutation occurs in a germ-line cell (one that will give rise to gametes, i.e., egg or sperm cells), then this mutation can be passed to an organism's offspring. ... Germ-line mutations occur in reproductive cells (sperm or eggs) and are passed to an organism's offspring during sexual reproduction.”

BRAINLIEST WILL BE APPRECIATED