It is a genetic change that causes differing characteristics between organisms in a certain species.
Answer:
There are actually two, I think.
CAT Histidine His
CAC Histidine His
Explanation:
I asked my aunt. She is a worker in the medical field.
Yes,,,this is trueee absolutely
They had to change they way they live which is quite difficult it is like you going to a new school in a new state and not being used to anyone
