During an experiment on frog embryos, a scientist removes a few cells from the neural tube. what effect would this have on the embryo

This is a type pf behavior that animals are born with and them to survive

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

Brainliest ! which would require more force to move or slow down between a bowling ball and a soccer ball? explain why?