How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though they look and perform completely different? A. The two different cells become mutated.
B. The genes expressed in each cell are different.
C. They actually have different DNA in the two types of cells.
D. The genome of the different cells changes.​

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

dude i stopped reading after the first 7 words but hey you seem real smart thats awesome have a great day

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

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explanation: