What is the name of the process that occurs when complementary pieces of dna or rna bind to each other?

The association of a DNA or RNA strand to its complement is one of the basic research tools of the molecular biologist. Binding of a compliment can identify target regions of DNA or RNA, and can be used to disrupt the process of DNA manufacture. If the complementary DNA is labeled with a compound that fluoresces, then the binding of the fluorescent probe can actually be visualized using a microscope. This permits the "real time" examination of DNA synthesis.

The correct answer is Option D

Evolution can be defined as the inheritable change that takes place over successive generations.These characters are the expressions of the gene that are passed on from one generation to another generation over a period of time. This is due to variation which comes due to recombination during sexual reproduction. This change is visible both phenotipically and genotypically.

Hence, Evolution happens slowly over a period of time.