The invention of DNA replication through PCR!
Because of this technology, we can now classify organisms based on genetic relatedness instead of the similarity between physical traits. The more we use PCR to identify different organisms across all “kingdoms” the more the previously established family tree of life shifts into something new
Answer:
The Lipid Bilayer
Explanation:
The lipid bilayer has been firmly established as the universal basis for cell-membrane structure. It is easily seen by electron microscopy, although specialized techniques, such as x-ray diffraction and freeze-fracture electron microscopy, are needed to reveal the details of its organization. The bilayer structure is attributable to the special properties of the lipid molecules, which cause them to assemble spontaneously into bilayers even under simple artificial conditions.