Question

write the differences between mitosis and meiosis​

Answer 1

*Mitosis*

1) Involves one cell division

2)Results in diploid daughter cells (chromosome number remains the same as parent cell)

3)Daughter cells are genetically identical

4)Occurs in all organisms except viruses

5)Creates all body cells (somatic) apart from the germ cells eggs and sperm)

*Meiosis*

1)Involves two successive cell divisions

2)Results in haploid daughter cells (chromosome number is halved from the parent cell)

3)Daughter cells are genetically different

4)Occurs only in animals, plants and fungi

5)Creates germ cells (eggs and sperm) only

Answer 2

Definition :-

Mitosis :

• A process of asexual reproduction in which the cell divides into two, producing a replica with an equal number of chromosomes in each resulting diploid cell.

Meiosis :

• A type of cellular reproduction in which number of chromosomes are reduced by hall producing two haploid cells.

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Occurs in :-

Mitosis :

• All organisms

Meiosis :

• Reproductive cells of humans, animals, plants and fungi.

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Type of reproduction :-

Mitosis :

• Asexual

Meiosis :

• Sexual

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Genetically :-

Mitosis :

• Produces identical organisms or cells.

Meiosis :

• Different cells or organisms.

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Crossing over :-

Mitosis :

• No, crossing over cannot occur.

Meiosis :

• Yes, mixing of chromozomes can occur.

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Pairing of Homologous chromosomes :-

Mitosis :

• No

Meiosis :

• Yes

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Number of divisions :-

Mitosis :

• 1

Meiosis :

• 2

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Number of daughter cells produced :-

Mitosis :

• 2 diploid cells

Meiosis :

• 4 Haploid cells

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Chromosome number :-

Mitosis :

• Remain the same

Meiosis :

• Reduced by half

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Steps :-

Mitosis :

• Steps of mitosis are Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis.

Meiosis :

• The steps of meiosis are Interphase, Prophase - 1, Metaphase - 1, Anaphase - 1, Telophase - 1, Prophase - ll, Metaphase - ll, Anaphase - ll and Telophase - ll.

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Karyokinesis :-

Mitosis :

• Occurs in interphase

Meiosis :

• Occurs in Interphase - ll

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Cytokinesis :-

Mitosis :

• Occurs in Telophase

Meiosis :

• Occurs in Telophase - 1 and Telophase - ll

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Centromeres split :-

Mitosis :

• The centromeres splits during Anaphase.

Meiosis :

• The centromeres do not separate during Anaphase - 1 but during Anaphase - ll

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Creates :-

Mitosis :

• Makes other than sex cells

Meiosis :

• Sex cells only. Female egg cells or male sperm cells.

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Discovered by :-

Mitosis :

• Walther Flemming

Meiosis :

• Oscar Hertwig

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