Race to build a protein in this fun game about protein synthesis. Learn about transcription:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.