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Question
Which of the following stages of meiosis involves division of centromere?
Which of the following stages of meiosis involves division of centromere?
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Solution
The correct option is D Anaphase II
The type of cell division that reduces the chromosome number by half resulting in the production of haploid daughter cells is known as meiosis. It occurs during the formation of gametes in diploid organisms. It involves two cycles of nuclear and cytoplasmic division called Meiosis I and meiosis II.
Metaphase I is a substage of meiosis I. It is marked by the alignment of homologous chromosomes at the equatorial plate.
The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes.
Metaphase II, Anaphase II and Telophase II are substages of meiosis II.
Metaphase II - Chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids.
Anaphase II - Splitting of the centromere of each chromosome, that hold the sister chromatids together, allowing them to move toward opposite poles of the cell.
Telophase II - Last phase of meiosis. Two groups of chromosomes get enclosed by a nuclear envelope.
The type of cell division that reduces the chromosome number by half resulting in the production of haploid daughter cells is known as meiosis. It occurs during the formation of gametes in diploid organisms. It involves two cycles of nuclear and cytoplasmic division called Meiosis I and meiosis II.
Metaphase I is a substage of meiosis I. It is marked by the alignment of homologous chromosomes at the equatorial plate.
The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes.
Metaphase II, Anaphase II and Telophase II are substages of meiosis II.
Metaphase II - Chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids.
Anaphase II - Splitting of the centromere of each chromosome, that hold the sister chromatids together, allowing them to move toward opposite poles of the cell.
Telophase II - Last phase of meiosis. Two groups of chromosomes get enclosed by a nuclear envelope.
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