Differentiate between Mitosis and Meiosis?
Answers
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Answer:
Meiosis
Meiosis is a type of cell division that results in the formation of four daughter cells each with half the number of chromosomes as the parent cell.
Mitosis
Mitosis is the type of cell division that results in the formation of two daughter cells each with the same number and kind of chromosomes as the parent cell.
Differences Between Mitosis and Meiosis
The important difference between mitosis and meiosis are mentioned below:
Difference between Mitosis and Meiosis
Mitosis
Meiosis
Interphase
Each chromosome replicates. The result is two genetically identical sister chromatids Chromosomes not yet visible but DNA has been duplicated or replicated
Prophase
Prophase –Each of the duplicated chromosomes appears as two identical or equal sister chromatids, The mitotic spindle begins to form. Chromosomes condense and thicken Prophase I – crossing-over recombination – Homologous chromosomes (each consists of two sister chromatids) appear together as pairs. Tetrad is the structure that is formed. Segments of chromosomes are exchanged between non-sister chromatids at crossover points known as chiasmata (crossing-over)
Metaphase
Metaphase -The chromosomes assemble at the equator at the metaphase plate Metaphase I Chromosomes adjust on the metaphase plate. Chromosomes are still intact and arranged as pairs of homologues
Anaphase
Anaphase – The spindle fibres begin to contract. This starts to pull the sister chromatids apart. At the end of anaphase, a complete set of daughter chromosomes is found each pole Anaphase I Sister chromatids stay intact. However, homologous chromosomes drift to the opposite or reverse poles
Mode of Reproduction
Asexual Reproduction Sexual Reproduction
Occurrence
All the cells Reproductive cells
Function
General growth and repair, Cell reproduction Genetic diversity through sexual reproduction
Cytokinesis
Occurs in Telophase Occurs in Telophase I and in Telophase II
Discovered by
Walther Flemming Oscar Hertwig