The answer, based on. decades of intelligence research, is an. unequivocal yes. No matter their form. or content, tests of mental skills invari-. ably point to the existence of a global. factor that permeates all aspects of cog-. nition.
The polymerase chain reaction (PCR) is a technology in molecular biology used to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence.
RT-PCR is a PCR test that is designed to detect and measure RNA. Although initial PCR tests amplified DNA, many viruses and other biological components (for example, mitochondria) utilize RNA as their genetic material.