The steps involved in sexual reproduction are as follows :
(i) Formation of gametes through meiosis
(ii) Transfer of male gametes into female body.
(iii) Fertilisation (fusion of male and female gametes).
(iv) Post fertilisation changes
Advantages of sexual reproduction :
(i) It is a source of genetic variation among individuals of a population
(ii) It gives rise to individuals that are more adapted to the environment