An organism having somatic cells with the diploid number of chromosomes.
The processes by which gametes are formed, including the reduction of chromosomes in a germ cell from the diploid number to the haploid number by meiosis.
At fertilization, when the haploid gametes fuse, the diploid number of chromosomes is restored.
A gamete containing a diploid number of chromosomes, rather than the usual haploid number.