Something that isn't a major concern could be the wether because the whether usually does not effect his experimental concept. In this case his concept is testing the effects of peanut butter on short term memory
The dna is not copied before meiosis 2
The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine. This base is also a pyrimidine and is very similar to thymine. Uracil is energetically less expensive to produce than thymine, which may account for its use in RNA.
I think the answer would be A
