LABORATORY REVIEW
MITOSIS AND MEIOSIS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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prophase
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metaphase
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anaphase
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telophase
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Detailed explanation-1: -During metaphase I, all of the doubled homologous chromosome pairs line up along the midline of the cell between the two centrioles.
Detailed explanation-2: -Metaphase: During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate.
Detailed explanation-3: -In prophase I of meiosis, the homologous chromosomes form the tetrads. In metaphase I, these pairs line up at the midway point between the two poles of the cell to form the metaphase plate.
Detailed explanation-4: -Metaphase. During metaphase, spindle fibers attach to the centromere of each pair of sister chromatids (see Figure below). The sister chromatids line up at the equator, or center, of the cell. This is also known as the metaphase plate.
Detailed explanation-5: -In metaphase II of meiosis, and metaphase of mitosis, chromosomes line up along the metaphase plate due to the action of microtubule spindle fibers emanating from the centrosomes located at opposite cell poles. These fibers are attached to the chromosomes by kinetochores at the centromeres of the chromosomes.