Answer: Environment can influence expression of genes
Explanation:
Identical twins almost share everything at birth, and so much of it, that would make you think they would both grow and rarely be differentiated from another but this differentiation can be possible when they share different location. Locations give genes room for expression, basically weather conditions, this could impact in how a child would grow, their size, colour e.t.c
That after a period of time, they would be a notable difference between the twins after sharing different locations.