Are you referring to Murray Llewellyn Barr? :) He was the main scientist to experiment the neurons in female cats.
Hope this helps! :)
I believe the answer is chromosome or dna
9F you will talk about preparing more sucrose solutions at narrower intervals and cross matching the results.
9E i am not sure but I think it might be slightly higher than 0 , like maybe 1 or 2 as the change in mass when it was in 0 isn't that big.