Answer:
Charles Darwin was best known in the 19th century
Explanation:
<h2>Answer</h2>
The parasympathetic neurotransmitter at target organs is <u>acetylcholine</u><u>.</u>
<h3>#CarryOnLearning</h3>
During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.
Therefore, the answer is A: The DNA must be replicated.
The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).
Niches, trophic levels, and ecological processes of a biological community.