Science Enhanced S&S Biology - Virginia Department of ...

The stages, pictured above, are G1, S, G2, and M. The G1 stage stands for “Gap 1.” The S stage stands for “synthesis” and is the stage in which DNA replication occurs. The G2 stage stands for “Gap 2.” ... Preparing an Onion Root Tip Squash Mount Slide. This process uses onion root tips as the meristematic tissue. Make a squash mount ... ................
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