I believe your answer would be Echinoderms and Chordates. I hope this helps!
They say how an enzyme perfectly fits into its substrate is alike a "lock and key".
Only one specific enzyme can fit a specific substrate.
Answer:
Matution include changes as small as the substitution of a single DNA building block, nucleotide base, with another nucleotide base.... Other matutions result in abnormal protein product.
At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called a subduction zone.
