ï»¿ Distinguish between cytokinesis and karyokinesis. from Biology Cell Cycle and Cell Division Class 11 Assam Board

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Distinguish between cytokinesis and karyokinesis.

 Cytokinesis Karyokinesis 1.It is a division of cytoplasm into daughter cells. 2. Stages such as prophase, metaphase, anaphase, and telophase are not present in cytokinesis. 1. It is division of nucleus into daughter nuclei 2. It is divided into four stages: prophase, metaphase, anaphase, and telophase
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Name an important event that occurs during meiosis and not during mitosis.

Crossing over takes place during meiosis but not during mitosis.
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What is polyteny ?

Polytene chromosomes are giant chromosomes which are formed due to repeated DNA replication without cell division. They are found in some insects.
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What are two types of cells on the basis of presence or absence of nucleus ?

On the basis of the presence and absence of nucleus the cells are divided into two types Eukaryotic and prokaryotic cells.
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Name the process in which there is an exchange of genetic material between non-sister chromatids of homologous chromsomes during meiosis.

Crossing over.
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Namethe five phases of of Prophase I.

The five phases of prophase 1 are
i. Leptotene
ii. Zygotene
iii. Pachytene
iv. Diplotene
v.  Diakinesis.
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