The process of DNA replication occurs just before .
Select one:
a. nucleosynthesis
b. replication
c. cytokinesis
d. nuclear division

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes