tolerate conditions that are normally fatal
The oldest fossil evidence that geochemists have been able to find in deposits in Pilbara, Australia, and South Africa have been dated to 3.5 bya. In addition, organic compounds that may be the result of those produced by organisms have been dated, also in Greenland, to 3.8 bya.
<span>a. so that a cell can grow.
Mitosis is responsible for this replication. During its phases the cell prepares various needed materials and procedures to do the process and then finally duplicate the DNA into the daughter cells.
</span><span>Semiconservative mechanism of DNA replication means that each daughter DNA strand contains one strand from the parent and one that is newly synthesized.</span>
