"And since they each orgnansim is constructed in a way that all are physically equally able to breed , then the process of who breeds is essentially a random process ."
"Not all `` orgnansims `` are able to breed . Some are sterile ( mules or ones with mutations ) , some die in the `` lottery `` ( which is biased against certain traits ) , and some simply breed less ( those who ca n't get as much food , for example ) ."
"each orgnansim is constructed in a way that all are physically equally able to breed"
"Not all `` orgnansims `` are able to breed ."