Research by Christopher Cullis Has Shown That ____

Research by Christopher Cullis has shown that ____.

A) the genome size of plants varies little between species
B) the genome size of individual plants of the same species is constant
C) a plant's environment can act as a selective agent to establish advantageous variants, but these variants cannot be transmitted to the next generation
D) a plant's environment can act as a selective agent to establish advantageous variants, and these variants can be transmitted to the next generation
E) the genome size of plants is related to plant size