jagged line of protein discs which attach thin filaments from
end to end, trace the boundary where
sarcomeres connect, thick type of
smallest muscle unit: composed of staggered arrays of many myosin molecules
which interact with actin when calcium is present.
Answer:
D. I.
maybe its D, I think it might be D
If you do not have variations to be selected by natural or sexual selection on their superior abilities to survive and reproduce successfully then nothing can be naturally selected against the immediate environment.
I am pretty sure the answer is a
