ANIMAL REPRODUCTION AND DEVELOPMENT
SEXUAL REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The root tissue cells all have the same number of chromosomes
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The root tissue cells have the different genetic makeup
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The root tissue cells produce identical gametes
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The root tissue cells split to form stem cells
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Detailed explanation-1: -Onion root cells have chromosome 16 in each cell after the G1, S, and M phases. Thus it concluded that mitosis causes root tissue cells to all to have the same set of chromosomes.
Detailed explanation-2: -To observe mitosis in onion root tip cells and record the different phases of mitosis. Hypothesis: It is expected that the most common phase of mitosis seen will be interphase as the cell spends around ninety percent of its time in this phase.
Detailed explanation-3: -The conclusion of this lab was that Mitosis is essential for the production of new cells. In the case of the onion root sample, the cells were damaged leading to the tester to undergo Mitotic cell division and it was found that mainly Interphase and Prophase were the stages that occurred in this lab.
Detailed explanation-4: -From examination of two images taken under a microscope, approximately 450 cells were tallied. Approximately 60% of the cells were in interphase. The next most common stage observed was prophase, and 35% of cells were in this phase.
Detailed explanation-5: -They are sites of rapid growth, so the cells are dividing rapidly. When an onion root tip is evaluated under a microscope, you can generally see all of the phases of mitosis within one field. In addition, it only tends to take 24 hours for the complete cell division in onion root cells.