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Doubt about metaphase 1

  1. Jul 21, 2015 #1
    Each chromosome of a bivalent attaches with two spindles in metaphase.It's correct,right?
    as i can see from the below image
    Metaphase1.jpg
    but my book says it's wrong.and i am confused because i can see different types of images
    according to the image below each chromosome of a bivalent attaches with three spindles in metaphase .
    metaphase-I.gif
    I think each chromosome of a bivalent attaches with many spindles in metaphase 1.That's why in book it is written that each chromosome of a bivalent attaches with two spindles in metaphase 1 is wrong statement.

    And in metaphase 1, bivalents migrate towards metaphasic plate.In my book it is also declared as wrong statement but I think it's correct.
     
  2. jcsd
  3. Jul 21, 2015 #2
    You mean the first one draws two fibers and the second one three?

    There are two spindles, one for each future cell.

    As for the fibers, there's videos that show GFP-marked microtubuli during cell division.

    You can count the fibers if you feel like.
     
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