1 is the correct answer!!
Tymine (t) can only pair with (a) in a dna strand. And the other letters which are G and C can only pair with each other. So A can be with T, T can be with A..... G can be with C and C can be with G.
the letters stand for:
A: adenine
G: guanine
C: cytosine
Partly genetic from body type, but most of it has to be acquired to be able to be good at athletic abilities <span />
The answer is methods of observation. Observational Methods in mental research involve the perception and portrayal of a subject's conduct. Scientists using the observational technique can apply fluctuating measures of control over the earth in which the perception happens.
Answer:
c
Explanation:
no explanation (plz give brainliest)
