1) DNA technology involves using DNA and genetic engineering techniques like recombinant DNA. Restriction enzymes cut DNA at specific sites, and DNA ligase joins DNA fragments together.
2) DNA cloning allows scientists to replicate genes and DNA fragments. DNA is inserted into a plasmid or virus and inserted into host cells to be replicated. PCR amplifies specific DNA fragments. Gel electrophoresis separates DNA by size.
3) The Human Genome Project mapped the entire human genome to further research into genes and disease. Gene therapy aims to treat diseases by inserting functional genes into patients. Transgenic organisms have genes inserted from other species.