The important paper by Hahn and Weinberg extended the early studies from their lab and others in which mouse 3T3 cells were found to be transformed by single oncogenes (like mutant ras). What was the key difference in their experimental system that led them to conclude that at least 3 changes (expression of telomerase, presence of an oncogene like mutant ras, and decreased function of p53/Rb via SV40 Large T antigen) were required to transform non-immortalized cells

this transfer is call conjunction

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called