Answer:
False.
Explanation:
I am almost entirely sure that DNA testing had not been discovered at this time, but regardless of whether that is true, the very first criminal case that DNA testing was used in occurred in 1985. So no, it was not used commonly in the 20's.
Answer:false
a
I think it explains that the DNA molecules are double helix with alenine and thymine paired together
the right answer is D
Answer: A
Answer: Trophic