Question

Draw labelled diagrams and write an explanation.

Distinguish between mitosis and meiosis.

Answer 1

	Mitosis	Meiosis
1.	It occurs in somatic cells and stem cells.	It occurs in germ cells.
2.	In this nucleus divides only once.	In this nucleus divides twice (Meiosis I and Meiosis II)
3.	In these two daughter cells are formed.	In these four daughter cells are formed.
4.	Daughter cells formed by mitotic division are diploid (2n).	Daughter cells formed by meiotic division are haploid (n).
5.	In mitosis, crossing over does not take place.	In meiosis, crossing over takes place.
6.	Mitosis plays an important role in growth, repair, healing and development.	Meiosis is important for the formation of haploid gametes and spores.

• Mitosis:

Prophase:

Metaphase:

Anaphase:

Telophase:

• Meiosis:

Prophase I:

Metaphase-I:

Anaphase-I:

Cytokinesis-I: