The p53 protein normally promotes
a) dna repair.
b) tumor formation.
c) cell division.
d) apoptosis.

A. DNA repair

Explanation:

The p53 protein acts as a tumor remover by controlling a set of genes required for the cell division. This protein protects the genome by restricting abnormal cells to proliferate avoiding the replication of damaged DNA. The first resource the protein uses and prometes is DNA repair and if the DNA has irreparable damage,  the last resource used by this protein is apoptosis.  

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

i believe it is c: genes for body color and wing size are inherited separately from each parent.