About 60 types of these units have been identified in humans, including the c-neu [see-new] and c-L-myc [see-ell-mike] varieties, where the "c" indicates cellular, as opposed to viral, origin.  First discovered in retroviruse
About 60 types of these units have been identified in humans, including the c-neu [see-new] and c-L-myc [see-ell-mike] varieties, where the "c" indicates cellular, as opposed to viral, origin.  First discovered in retroviruses, they were shown to derive from normal genes by Bishop and Varmus in the mid-1970s.  They can be formed from those normal genes by point mutation, translocation, or amplification but are no longer prefaced with the "proto" prefix at that point.  FTP, identify these genes, named for their tumor-inducing potential as the genetic cause of cancers.
About 60 types of these units have been identified in humans, including the c-neu [see-new] and c-L-myc [see-ell-mike] varieties, where the "c" indicates cellular, as opposed to viral, origin.  
oncogenes