Explain the outcome of meiosis I and meiosis II. What role does meiosis play in sexual reproduction? What is unique to Meiosis that does not take place in Mitosis? In meiosis, what is the purpose of crossing over? What are the differences between Meiosis I and Meiosis II? How are they s...
When a primary germ cell gets ready to begin meiosis the DNA is first copied in the same way as it occurs for mitosis. This cell then undergoes two divisions so that each of the four final cells only has half of the original DNA....
For well over 100 years, cell biologists have been wondering what determines the size of cells. In modern times, we know all of the molecules that control the cell cycle and cell division, but we still do not understand how cell size is determined. To check whether modern cell biology has...
Children conceived by assisted reproductive technologies (ART) have a moderate risk for a number of adverse events and conditions. The question whether this additional risk is associated with specific procedures used in ART or whether it is related to th
Intermolt Cryptocercus typically harbor the trophozoite stage, which reproduces by mitosis. Flagellates change from asexual to sexual methods of reproduction (i.e., initiate an SE cycle) at the time their host enters its molting period. The molting period of Cryptocercus begins with the ...
4.3. Effect of Cell Cycle and Oxygenation It has long been established that radiosensitivity of mammalian cells to low LET radiation is cell cycle dependent. Cells in mitosis and the G2 phase are the most sensitive and become most resistant in the S phase [48]. For high LET radiation, sign...