I had the same question and the answer was C OR A.
The pig heart is big,and the chicken heart is small.
Answer:
if sex cells were identical, there won't be genetics variations and we will just all be identical to our parents. genetic variation allows us to better adapt and survive
A The observed differences in plants height are due to genetics.
It would more likely to be pollinated by insects.
This is because the bright color of the petals can attract insects towards the flower thus sticking some pollen grains and transfer them to the stigma (female part of flower).
On the other hand, the color of petals do not really have effect on the wind pollination. Therefore this explains why wind pollinated flowers usually have small or dull colored petals.
