Your question is rather unclear but from what I can tell either there were not an even amount of Petri dishes or some of them were left open while others were not.
Answer: The mutation is substitution.
Explanation:
There are three main types of mutation:
Substitution, deletion, and insertion.
We would be able to tell right away if the second sequence had an insertion or deletion, because it would have a different number of letters than first sequence. However, it does not. Both sequences have 12 letters.
But, the 8th letter in the first sequence (T) is different from the 8th letter in the second sequence (A).
This is substitution.
I'm gonna have to go with no
This is because the water is dew.
Maybe we should probably check how that what gets to the ground in the morning. At the point when the surface of a question winds up plainly colder because of sending its idle warmth out, the current dampness in the air contracts among itself.