Training animals to help the disabled is an example of a. classical conditioning. b. fixed-interval reinforcement.
C. behavior modification.
d. latent learning

The gens present in the dna in the nucleus of the cell in the body

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask

This movement is also referred to as  glacial plucking

They are both used to view parts of the cell