A mutation is one form of genetic variation.
About the geologic time scale divisions
The geologic history of the Earth is broken up into hierarchical chunks of time. From largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.
Ribosomes are the organelles of the cell which are involved in protein-synthesis (I. e. process of making proteins)
I think the correct answer from the choices listed above is the last option. <span>The relationship in which each codon determines each specific amino acid used for making a protein is considered the Genetic Code. Hope this answers the question. Have a nice day.</span>
