Meiosis

IMPORTANT

Meiosis: Overview

This topic covers concepts such as Meiosis, First Meiotic Division, Prophase I, Leptotene, Zygotene, Pachytene, Crossing Over, Diplotene, Diakinesis, Metaphase I, Anaphase I, Telophase I, Second Meiotic Division, Prophase II, etc.

Important Questions on Meiosis

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Albinism in humans is controlled by a recessive allele. How many copies of this allele will be found at one of the poles of a cell at telophase-I of meiosis in an albino person?

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In Drosophila melanogaster males, homologous chromosomes pair and segregate during meiosis but crossing over does not occur. At which stage of meiosis does segregation of 2 alleles of a gene take place in their individuals?

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How many cells are produced at the end of the cytokinesis after meiosis?

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The reformation of the nucleus around each set of chromosome takes place in

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The chromosomes get enclosed in nuclei in which of the following phase?

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56 cells are produced in meiosis in which

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During gamete formation, the enzyme recombinase participates during

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During the first metaphase of meiosis the centromeres

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Chiasmata formation takes place during

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If a cell has a chromosome number after first meiosis equal to 48. The chromosome number in the daughter cells after the completion of meiosis will be

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Chromosome number is halved in meiosis during

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The second division in meiosis is called

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Repulsion of homologous chromosomes takes place in

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Synaptonemal complex is formed during

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The role of meiosis

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Condensation of chromosomes occurs in

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By comparing mitosis and meiosis occurring in the same organism, which ONE of the following options is CORRECT regarding the DNA content per cell?

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During which phase of meiosis does crossing over takes place?

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Fill up the blanks with suitable words

In Meiosis, chromosomes start _______ which is called __________ thus a ______ of chromatids. Later the non-sister chromatids will undergo ________ leading to genetic material __________.

A
Paring

B
Synapsis

C
Exchange

D
Tetrad

E
Crossing over

Correct sequence is

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The chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids are in