Q: Proteins include 20 common types of what compounds?


Read this paragraph and choose the correct option from the provided answers:

There are 20 common amino acids in proteins. There are 64 possible codons, more than enough to code for the 20 amino acids. The genetic code is shown in Figure below . To see how scientists cracked the genetic code, go to this link: http://www. dnalc. org/view/16494-Animation-22-DNA-words-are-three-letters-long-. html .

 Choices:

- mitochondria

- rna acids

- dna

- amino acids


A:
amino acids