Observing the wrong section of the tipProf. Collins: I see you're having some trouble with the observation. Let's take a look together. You: We've been trying to identify the stages of mitosis, but everything just looks like a jumble of cells. Prof. Collins: Ah, I see. Well, let's start by making sure we're looking at the right section of the root tip. Can I take a look at your slide? You carefully hand the microscope slide over to Prof. Collins, who places it under the microscope and adjusts the focus to examine the sample. Prof. Collins: It seems like you may have been focusing on the wrong region of the root tip. Mitotic activity is mostly concentrated in the meristem region, where rapid cell division occurs. She adjusts the position of the slide and moves the microscope stage slightly to reposition the sample. Prof. Collins: There we go. Now, take a look through the microscope and focus on this area here. Can you see the densely packed cells with small, dark nuclei? The students peer through the microscope once again, this time focusing on the region indicated by Prof. Collins. Suddenly, the cellular structures come into sharper focus, revealing the distinct patterns of mitotic activity. Martha: Wow, I can see it now! The cells look like they're in different stages of division. I think I see some cells with condensed chromosomes. Prof. Collins: Exactly, Martha! That's the meristem region, where you'll find cells actively undergoing mitosis. It looks like you were observing the wrong section, perhaps the elongation or differentiation zone, where cells are not actively dividing. You: Thanks Prof. Collins. We will go ahead and look for the different stages of mitosis from the slide. Identify the stages in mitosis cells in the onion root tip meristem before you look at the video with the answer. |
Map: CELL DIVISION_3 (956)
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Review your pathway |