That is correct. Any animal that produces milk is a mammal. That is the key characteristic that defines Class Mammalia.
There are different types of observers. Casual observers differ from scientific observer. Seeing and observing are two different things. Not that everybody seeing is actually observing the thing.
A casual observer just sits back and watch for something to happen while a scientific observer comes up with some hypothesis to work on it.
Answer:
Your answer for this is D
Mitotic spindles are microtubule-based structures that separate chromosomes during mitosis. So the cell would lack structure.
Part B: AUG-GCG-AAC-UGU
Part C:It will change but the only one the will change is the A and U.