Why does a scientific theory take longer to develop than a hypothesis

It takes longer because in a scientific theory, you need to do research on the subject which takes longer than stating a quick hypothesis.

Explanation: Scientific theories are created through the process of the scientific method. Observation and research lead to a hypothesis, which is then tested. Hypothesis is when someone makes a prediction about some new phenomenon that should be observed if the theory is correct. Again, this prediction is called a hypothesis. A hypothesis is an opinion, because people have different views on certain subjects.

the backbone of the dna and rna compound is sugar phosphate.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).