In sheep, white fur is dominant to black fur. if two white sheep produce an offdpring with black fur, the parent's genotype for fur must be

because of

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

i thinking chemical change

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.