The Leaves of a Maple Tree Vary in Size Depending

Multiple Choice

The leaves of a maple tree vary in size depending on the location of the leaves on the tree.Those growing at the outer region of the tree tend to be smaller than those growing closer to the trunk of the tree.This allows leaves that are growing in the shade to have a larger surface area.This show that genes have the ability to

A) Respond to environmental factors
B) Show two different genetic variations
C) Be turned off if they are not needed
D) Choose whether or not they are expressed
E) Mutated by exposure to sunlight