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Prophase ii

prophase II

The first stage in the second meiotic division of meiosis, following telophase I. In each of the two cells which were produced by the first meiotic division, the chromosomes migrate towards the cells centre. The stage ends when the chromosomes are aligned along a single plane in the centre of each cell.


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Meiosis prophase I crossover

“Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes.” http://en.wikipedia.org/wiki/Chromosomal_crossover Question: Due to the multiple layers of winding, how can parts of the chromosome break evenly? Is ...

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by gs99
Fri Mar 07, 2014 9:23 pm
 
Forum: Molecular Biology
Topic: Meiosis prophase I crossover
Replies: 0
Views: 2112

Re: Year 11 Meiosis helpp!!!

During the first part of meiosis (prophase 1) there can be recombination (crossover) of homologous chromosomes. This would show up on your diagram as being a little bit of red on one arm of the blue X, and a matching little bit of blue in ...

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by ChrisHoStuart
Wed Oct 16, 2013 9:36 am
 
Forum: Human Biology
Topic: Year 11 Meiosis helpp!!!
Replies: 3
Views: 2633

Re: Mitosis and meiosis!

The difference is not on the S phase. The differences are the meiosis is the reduction of chromosomes number compared parent cell. In Meiosis Prophase I is different from Prophase in mitosis where there is crossing over occur. In Metaphase I, the homologous chromosomes are aligned at the equatorial ...

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by mavis
Wed Jan 30, 2013 9:00 am
 
Forum: Cell Biology
Topic: Mitosis and meiosis!
Replies: 3
Views: 4206

Re: Crossing Over

... in meiosis happens during metaphase 1. I asked her about this, pointing out the evidence that I had that said that crossing over happens during prophase 1. She says that the line between prophase and metaphase are obscure and that the actual event happens during metaphase. What does anyone have ...

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by LadyAmalara
Thu Oct 25, 2012 12:43 am
 
Forum: Genetics
Topic: Crossing Over
Replies: 12
Views: 23791

Re: Compare and contrast the processes of Mitosis and Meiosis

... dis topic. Mitosis n Meiosis 1. Similarities 2. Differences 3. Difference in Plant Cell mitosis and Animal Mitosis. 4. Difference Substages of Prophase 1 of Meiosis. (Leptotene,Zygotene,Pachytene,Diplotend,Diakinesis) 5.Significance of Mitosis and Meiosis 6. Disorders during Cell Divison. (Non ...

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by Satyaki
Thu Sep 06, 2012 3:44 am
 
Forum: Cell Biology
Topic: Compare and contrast the processes of Mitosis and Meiosis
Replies: 3
Views: 13676
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