The minimum legth of a codon could be two. If it was only one of the 6 nitrogeneous bases in a codon, we'd only have 6 possible amino acids. If we have, though, a combination of two amino acids out of the 6 nitrogeneous bases, we would have then 36 possible combinations (6 possibilities for the first position × 6 possibilities for the second position) that would allow the existence of the 20 different amino acids.
In the human case, for example, with only 4 nitrogeneous bases, a combination of two amino acids would be insufficient (4×4=16) for the 20 amino acids.
Answer:
B. Molecules move from areas of high concentration to areas of low concentration
Explanation:
Diffusion is the spread of something more widely.
Neurotransmitters is the word you're looking for.
To me, this sounds like the Garter Snake is becoming more immune to this toxic chemical.
A. the volcanic eruptions of Mt. Vesuvius