What part of a nucleotide contains the genetic code?

Azygote becomes a mature adult through the process of: meiosis or mitosis

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.