Interphase is the period between cell divisions. During this time, chromosomes replicate—each DNA strand unzips into two strands while free-floating bases attach to the unzipped strands. The ...

This is a preview. Log in through your library . Abstract Navicula bacillum frustules, like those of many other naviculoid diatoms, exist in two forms, cis and trans, which occur in the ratio 1 cis: 2 ...