She tested several dozen pieces of plastic. 10:06 a.m. - Cross-examination highlights ‘contributors’ to DNA On his cross-examination, David Yanetti, a lawyer for Read, asked Porto about his ...

What did the duo actually discover? Many people believe that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s. In reality, this is not the case.

DNA (deoxyribonucleic acid) is the nucleic acid polymer that forms the genetic code for a cell or virus. Most DNA molecules consist of two polymers (double-stranded) of four nucleotides that each ...