A continuous state of muscle contraction is represented by: A. twitch

B. tension

C. treppe

D. tetanus

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

what is the statement?

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;