Meiosis Cell Division Class 11 Notes

Meiosis Cell Division Class 11 Notes Meiosis vs Mitosis Cells are the building blocks of life Whether it is a single cell organism or a multicellular one But to keep life going cells must multiply to heal or reproduce The two main

The growth and reproduction of organisms happen via cell division The new cells are produced in eukaryotic cells Further the nuclear division processes of mitosis and meiosis are quite similar Meiosis is the process by which sexually reproducing organisms make their sex cells sperm and eggs During meiosis a specialized cell called a germ cell splits to make four new sex cells

Meiosis Cell Division Class 11 Notes

Meiosis Cell Division Class 11 Notes
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Meiosis is called reductional division because number of chromosomes and amount of DNA in daughter cells is reduced to half than that of parent cell In meiosis diploid number of Prophase I is the longest phase of meiosis and is further sub divided into 5 phases Leptotene Condensation makes chromosomes become distinct and compact Zygotene Homologous

Meiosis results in formation of four daughter cells from a single parent cell and each of the daughter cell will have half of the genetic materials as of that in the parent cell During meiosis the cell passes only once through this phase and DNA synthesis by replication occurs only once during this phase Hence only one cycle of DNA replication occurs during

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During meiosis II the genetic content is already reduced to half so here the division is similar to mitosis where the sister chromatids separate during anaphase keeping the amount of genetic Propahse I It is the longest phase of meiosis Three major event occur in propahse I that are condensation of chromatin into chromosome next is formation of synapsis and finally crossing

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Meiosis Cell Division Class 11 Notes - Meiosis is called reductional division because number of chromosomes and amount of DNA in daughter cells is reduced to half than that of parent cell In meiosis diploid number of