Types of reproduction

Asexual/ sexual reproduction

Sexual reproduction is when two organisms from the same species are required to produce  non-idential offspring where characteristics are acquired from both parents. This is typical in most animals.

Asexual reproduction on the other hand is when one organism is required to produce genetically identical offspring. This occurs in some plants and in bacteria [binary fission].

A cell is diploid if it contains two copies of each chromosome [sexual].
A cell is haploid if it contains one copy of each chromosome [asexual].

Gametes are sex cells and and they are only utilised in sexual reproduction.
Fertilisation is the fusion of two gametes to produce a zygote which undergoes cell division and forms an embryo.