Distinguish between Mitosis and meiosis. - Science and Technology 2

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Distinguish Between

Distinguish between

Mitosis and meiosis.

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  Mitosis Meiosis
i) In this, the nucleus divides only once. In this, the nucleus divides twice (Meiosis I and Meiosis II)
ii) In this, two daughter cells are formed. In this, four daughter cells are formed.
iii) It occurs in somatic cells and stem cells It occurs in germ cells.
iv) Daughter cells formed by mitotic division are diploid (2n). Daughter cells formed by meiotic division are haploid (n).
v) Mitosisplaysan an important role in growth, repair, healing, and development. Meiosis is important for the formation of haploid gametes and spores.
vi) It is also known as equational division as the daughter cell has the same number of chromosomes as the parent cell. Meiosis I is known as the reductional division where the chromosome number is reduced to half. Meiosis II is known as the equational division where the sister chromatids separate while the chromosome number remains the same.
vii) The prophase stage is short and does not comprise synapsis, crossing over, and the formation of chiasmata. The prophase I stage is very long. It comprises five stages. In the zygotene stage of meiosis I, the pairing of homologous chromosomes takes place. During the pachytene stage, crossing over occurs while in the diplotene stage, chiasmata formation occurs.
Concept: Mitosis and Its Phases
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SCERT Maharashtra Question Bank 10th Standard SSC Science and Technology 2 Maharashtra State Board 2021
Chapter 2 Life Processes in Living Organisms Part - 1
Distinguish between | Q 2
Balbharati Science and Technology Part 2 10th Standard SSC Maharashtra State Board
Chapter 2 Life Processes in living organisms Part -1
Exercises | Q 3.2 | Page 21

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