The movement of chromosomes towards opposite poles during Anaphase – I of meiosis is called:

Non – disjunction

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Disjunction

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Metakinesis

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Cytokinesis

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Solution

The correct option is B
Disjunction

The movement of chromosomes towards opposite poles during Anaphase – I of meiosis is called disjunction. Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division. Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells

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Question 4
During Anaphase - I of meiosis
(a) homologous chromosomes separate
(b) non-homologous autosomes separate
(c) sister chromatids separate
(d) non-sister chromatids separate

The movement of chromosomes towards opposite poles during Anaphase – I of meiosis is called:

Q. Assertion :Nondisjunction is the failure of paired chromosomes to segregate during the Anaphase of meiotic division of gametogenesis. Reason: Non-disjunction results in production of abnormal gametes.

Q. The non-disjunction, in meiosis may result is extra copy of a chromosome in a sperm cell. During which phase the above phenomenon may occur?

Q. The following events occur during the process of meiosis. Arrange the following events of meiosis in the correct sequence.
I. Terminalization of chaismata
II. Crossing over
III. Synapsis
IV. Disjunction of chromosomes

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Standard XII Biology

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