what is the difference between mitosis and meiosis
Answers
Explanation:
No: 1
Mitosis: Take place in the somatic cells of the body
Meiosis: Take place in the germ cells.
No:2
Mitosis: Occurs in both sexually as well as asexually reproducing organisms.
Meiosis:Occurs only in sexually reproducing organisms.
No:3
Mitosis: The cell divide only once.
Meiosis: There are two cell divisions, the first and the second meiotic divisions.
No: 4
Mitosis: Interphase occurs prior to each division.
Meiosis: Interphase precedes only in meiosis I. It does not occur prior to meiosis II.
No: 5
Mitosis: DNA replication takes place during interphase I.
Meiosis: DNA replication takes place during interphase I but not interphase II
No: 6
Mitosis: The DNA replicates once for one cell division.
Meiosis:The DNA replicates once for two cell divisions
No: 7
Mitosis: The duration of prophase is short, usually of a few hours.
Meiosis: Prophase is comparatively longer and may take days.
No: 8
Mitosis: Prophase is comparatively simple.
Meiosis: Prophase is complicated and divided into leptotene, zygotene, pachytene, diplotene, and diakinesis.
No: 9
Mitosis: The cell divides only once and the chromosomes also divide only once.
Meiosis: There are two cell divisions but the chromosomes divide only once.
No: 10
Mitosis: There is no synapsis.
Meiosis: Synapsis of homologous chromosomes takesplace during prophase.
No: 11
Mitosis: The two chromatids of a chromosome do not exchange segments during prophase.
Meiosis: Chromatids of two homologous chromosomes exchange segments duringcrossing over.
No: 12
Mitosis: Each chromosomes consists of two chromatids united by a centromere.
Meiosis:The two homologous chromosomes from bivalents or tetrads. Each bivalents has four chromatids and two centromers.
No: 13
Mitosis: The arms of the prophase chromatids are close to one another.
Meiosis: The arms of the chromatids are separated widely in prophase II.
No: 14
Mitosis: Chromosomes are already duplicated at the beginning of prophase
Meiosis: When prophase I commences the chromosomes appear single, (although DNA replication has taken place in interphase I).
No: 15
Mitosis: No bouquet stage is recorded.
Meiosis: Chromosomes of animals and some plants show covergence towards one side during early prophase I. It is known as bouquet stage.
No: 16
Mitosis: Pairing of chromosomes does not occur in mitosis.
Meiosis:Pairing or synapsis of homologous chromosomes takesplace during zygotene of prophase I and continues upto metaphase I
No: 17
Mitosis: A synaptionemal complex is absent.
Meiosis: Synapsed homologous chromosome develop a synaptonemal.
No: 18
Mitosis: The metaphase plate is made up of chromosome pairs.
Meiosis: The metaphase plate is made up of paired chromosome pairs.
No: 19
Mitosis: Division of the centromeres take place during anaphase.
Meiosis: There is no centromeric division during anaphase I. Centromeres divide only during anaphase II.
No: 20
Mitosis:The chromosomes separates simultaneously during anaphase.
Meiosis: Short chromosomes separate early, separation of long chromosome is delayed.
No: 21
Mitosis:Anaphase chromosomes are single stranded.
Meiosis: Chromosomes are double stranded in anaphase I, but single stranded in anaphase II.
No: 22
Mitosis: Similar chromosomes move towards the opposite poles in anaphase.
Meiosis: Dissimilar chromosomes move towards the opposite poles both in anaphase I and II.
No: 23
Mitosis: Spindle fibers disappear completely in telophase.
Meiosis: Spindle fibers do not disappear completely in telophase I.
No: 24
Mitosis: Nucleoli reappear at telophase.
Meiosis: Nucleoli do not reappear at telophase I.
No: 25
Mitosis: Cytokinesis follows every mitosis.It produces two new cells.
Meiosis :Cytokinesis often does not occur after the first or reduction division. It is often simultaneous after second division to result in four new cells.
No: 26
Mitosis: The chromosome number remains constant at the end of mitosis.
Meiosis: The chromosome number is reduced from the diploid to the haploid.
No: 27
Mitosis: It helps in multiplication of cells.
Meiosis: Multiplication of cells is not involved.
No: 28
Mitosis: Take part in healing and repair.
Meiosis: Take part in the formation of meispores or gametes and maintenance of chromosome number of the race.
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