Question

pls write 10 differences between meiosis and mitosis!! reply fast

Answer 1

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


Meiosis is a type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells.

Following are the differences between Mitosis and Meiosis:
S.N.
Differences
Mitosis
Meiosis
1
Type of Reproduction
Asexual
Sexual
2
Genetically
Similar
Different
3
Crossing Over
No, crossing over cannot occur.
Yes, mixing of chromosomes can occur.
4
Number of Divisions
One
Two
5
Pairing of Homologs
No
Yes
6
Mother Cells
Can be either haploid or diploid
Always diploid
7
Number of Daughter Cells produced
2 diploid cells
4 haploid cells
8
Chromosome Number
Remains the same.
Reduced by half.
9
Chromosomes Pairing
Does Not Occur
Takes place during zygotene of prophase I and continue upto metaphase I.
10
Creates
Makes everything other than sex cells.
Sex cells only: female egg cells or male sperm cells.
11
Takes Place in
Somatic Cells
Germ Cells
12
Chiasmata
Absent
Observed during prophase I and metaphase I.
13
Spindle Fibres
Disappear completely in telophase.
Do not disappear completely in telophase I.
14
Nucleoli
Reappear at telophase
Do not reappear at telophase I.
15
Steps
Prophase, Metaphase, Anaphase, Telophase.
(Meiosis 1) Prophase I, Metaphase I, Anaphase I, Telophase I; (Meiosis 2) Prophase II, Metaphase II, Anaphase II and Telophase II.
16
Karyokinesis
Occurs in Interphase.
Occurs in Interphase I.
17
Cytokinesis
Occurs in Telophase.
Occurs in Telophase I and in Telophase II.
18
Centromeres Split
The centromeres split during anaphase.
The centromeres do not separate during anaphase I, but during anaphase II.
19
Prophase
Simple
Complicated
20
Prophase
Duration of prophase is short, usually of few hours.
Prophase is comparatively longer and may take days.
21
Synapsis
No Synapsis
Synapsis of Homologous chromosomes takes place during prophase.
22
Exchange of Segments
Two chromatids of a chromosome do not exchange segments during prophase.
Chromatids of two homologous chromosome exchange segments during crossing over.
23
Discovered by
Walther Flemming
Oscar Hertwig
24
Function
Cellular reproduction and general growth and repair of the body.
Genetic diversity through sexual reproduction.
25
Function
Takes part in healing and repair.
Takes part in the formation of gametes and maintenance of chromosome number.