Introduction | Concepts | Conclusion
An Overview of Meiosis
Sexually reproducing organisms produce
haploid gametes through the process of meiosis. Meiosis
reduces the number of
chromosomes by half through the segregation of one member
of each chromosome
pair into different gametes. The genetic variability generated by this
assortment is expanded by crossing over during prophase I of
meiosis.
Mendel’s particulate factors are actually genes on
chromosomes,
and current knowledge affirms the physical nature of the basic units of
heredity
and their segregation into the gametes as predicted by Mendel in the
1860’s.
An Overview of Mitosis
Though it is readilly accepted that mitosis plays second fiddle to meiosis yet it would be equally illegitimate to over rule the importance of mitosis.
To begin with no meiosis is complete without mitosis in the shape of meiosis-II. Thus mitosis is the only method to numerically increase the number of cells without changing the chromosome.
Effectively mitosis brings about copying of a cell into two daughter cells.
An Overview of Meiosis, conclusion
