B. Organelles.
Prokaryotes (Bacteria etc.) usually have a cell wall, cell membrane, nucleoid, ribosome and a plasmid; unlike eukaryotes (Human cells) which have golgi apparatuses, Mitochondrias..etc
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The one major change that occurred was the placement and organization of the electron. Rutherford's model identified that the electrons were at a distance from the nucleus, Bohr's model identified that the electrons occurred at levels that related to their available energy, and the modern atomic model shows that electrons are located in a predicted area but cannot be identified in a specific point.
Answer:
The entire population will gradually become more similar to the best-adapted members.
Explanation:
Natural selection will cause the best-adapted members to have a better chance of survival and repopulation.