Basic meiosis question
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Basic meiosis question
In metaphase I can both of the chromatids of a double chromosome crossover? In textbooks the tetrad complex is always shown laid flat (it looks like XX ) so it makes since that only one chromatid from each double chromosome would be able to recombine in that geometry. But if this is a simplification for the sake of 2D display and the tetrad complex can actually assemble so that one double chromosome lays on top of the other (I can think of any reason they couldn't) than it makes sense that both chromatids could cross over.
Does anyone know the actual geometry of metaphase I?
Thanks!
Does anyone know the actual geometry of metaphase I?
Thanks!
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- Coral
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- MrMistery
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during a crossover 2,3 or 4 strands can cross over.
See the figures in this book http://books.google.com/books?id=3E_0H6 ... #PPA193,M1
See the figures in this book http://books.google.com/books?id=3E_0H6 ... #PPA193,M1
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
Re: Basic meiosis question
Thanks! that makes way more sense 

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