Gene therapy I hope this helps
<span>The correct
answer is B. Bees pollinating flowers.</span>
<span>
In biology, mutualism is how two different organisms survive upon the activity
of the other. Each benefits from the mutual relationship. In the case of bees
pollinating flowers, both the bees and the flowers need something and benefit
from the interaction with the other. </span>
A dominant trait can be shown both when an organism is homozygous dominant AND heterozygous. Two different genotypes give the same visible result so a testcross is needed to be able to accurately say if the organism is homozygous dominant or heterozygous