Reproduction: Reproduction is the biological process in which an individual gives rise to an offspring similar to itself.
Purpose of Reproduction:
1. Continuity of Species:
Reproduction maintains the continuity of species.
2. Population Organisation:
Reproduction maintains population of the young, adult and the aged persons.
Reproduction introduces variations in the organisms. Useful variations are essential for adaptations and evolution.
Life exists on earth due to reproduction in organisms.
Basic Features of Reproduction:
All modes of reproduction have some common basic features.
These are as follows:
(i) Synthesis of RNA, proteins and other bio-chemicals.
(ii) Replication of DNA.
(iii) Cell division.
(iv) Growth of cells.
(v) Formation of reproductive units.
(vi) Formation of new individuals from reproductive units.
Types of Reproduction:
Based on whether there is one or two organisms taking part in the process of reproduction
- Asexual Reproduction
- Sexual Reproduction
Clone- Off springs which are produced by asexual reproduction and are exact copy of their parents.