once people understood that the genetic material was made of DNA, what did they wonder?
they wondered how the information for not only the structure and workings of a cell, but also a wholeorganism, could be encoded
what did experiments on the fungus Neurospora crassa in the 1940s show?
it showed that radiationdamage to DNAprevented a singleenzyme from beingmade - this led to the one gene-one enzyme hypothesis but enzymes are a particularkind of protein, so the idea was extended to become the one gene-one protein hypothesis
what happened after the discovery of the one gene-one protein hypothesis?
it was realised that many proteins, such as haemoglobin, contain morethan1polypeptide
this lead to the one gene-one polypeptide hypothesis - this defines a gene in biochemical terms, by saying that a gene is a sequence of DNAbases that codes for a polypeptide
what can a gene be defined as?
as a sequence of DNAbases that codes for onepolypeptide
