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meiosis and mitosis

Hi guys, can someone please let me know what is going on in both these diagrams for each arrow? Just wanted to check that my understanding of these diagrams is correct:smile:

9.PNG
Reply 1
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sienna2266
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Bump
Is this a level stuff lol
This might help - https://www.youtube.com/watch?v=_x2RksGrzyE
C - Mitosis
A and B - Meiosis

E - Mitosis
D - Meiosis
Reply 5
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sienna2266
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Original post by Purplebottle
Is this a level stuff lol


yes
Reply 6
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sienna2266
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Original post by Lil_Jatt


Thanks!
Reply 7
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sienna2266
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Original post by barneywherry
C - Mitosis
A and B - Meiosis

E - Mitosis
D - Meiosis

Actually B,C and D is mitosis , A and E is meiosis
Original post by sienna2266
Actually B,C and D is mitosis , A and E is meiosis


How is the production of gametes Mitosis
Reply 9
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MR1999
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Original post by sienna2266
Actually B,C and D is mitosis , A and E is meiosis


Seems like you already know what's going on!
Reply 10
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MR1999
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Original post by barneywherry
How is the production of gametes Mitosis


The cells are already haploid.
I thought that mitosis only occurs in adult body cells
A and C are mitosis. B, D and E and meiosis.
Reply 13
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MR1999
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Original post by barneywherry
I thought that mitosis only occurs in adult body cells


I'm hardly a biologist, so I can't answer that question, but these exam questions are usually written to catch students out.
Original post by MR1999
The cells are already haploid.


B is actually meiosis 2. The gametophyte plant are the daughter cells of meiosis 1, which are also haploid. These cells then divide again to form male and female gamete, which are also haploid. Btw ploidy level does not mean the amount of DNA - it's the set of chromosomes. :smile:

Original post by barneywherry
I thought that mitosis only occurs in adult body cells


Nope, some plants reproduce asexually by mitosis.

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