Reproduction.

It is a biological process  in which an organism produces number of individuals or offsprings of similar type.

Importance of reproduction.

1. Continuity of species [means group of
 individuals which are similar in morphology (external features) functions, behavior but they can reproduce sucessfully in natural condition.

2.It maintains Chromosome number.

3. It helps in existence of life.

4.It helps in replacement of organisms.

Basic feature of reproduction.

Before reproduction these features are important .

1. Replication of DNA molecule means forming two or duplicate DNA copies .

2. Formation of RNA molecule,proteins ,cells , cell organelles and other biochemicals.

3.Cell division [Mitosis -asexual /Meiosis sexual.]

4. It helps in formation of separate reproductive units (Male/Female).

5. Formation of offsprings is due to combination of reproductive units.

Cell Division .

It is the process by which a parent cell divides into two or more daughter cells . On the basis of cell division there are two types of cells .

*Somatic cells.
*Germinal cells.

1. Somatic cells :These are those types of cells which shows only mitotic division. These cells are sort of reproduction i.e, asexual type of reproduction.

2. Germinal cells :These are those type of cells which shows only meiotic  division .The outer lining of testis and ovary are made up of germinal cells.

It has two phase.

1.Interphase.
2.Gophase.