Answer:
notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-an4l tail
Explanation:
had to censor second to last word but the 4 is an a
Because there are too many sex chromosomes I think
I believe this would be the cerebellum. This part of the brain is used for motor control like moving the fingers say and cognitive functions (to do with thinking) and also can affect the feelings of pain and pleasure.
