Two parents are needed inĀ sexual reproduction. During this process the nuclei of the male and femaleĀ gametesĀ are fused in order to create a zygote.Ā
This process is known as fertilisation. The gametes contain half the number of chromosomes in each (haploid). When the male and female gametes combine they create the full complement of chromosomes (diploid) in order to create a human embryo.
The gametes in:
animals are sperm and eggs
flowering plants are pollen and eggs
The offspring produced in sexual reproduction areĀ geneticallyĀ different to each other and the parents. This process results in variation as it involves the mixing of genetic information.
