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.
CRISPR is a molecular tool that edits the genomes of cells and organisms. The technology uses the DNA-cutting enzyme Cas9, with the help of a guide RNA sequence, to find and modify genetic targets. Previously, researchers used a Cas9 endonuclease, an enzyme that cuts through both strands of DNA.