Here is an interesting look at the fascinating world of gametes: Gamete - National Human Genome Research Institute (NHGRI)
A gamete is a highly specialized, haploid reproductive cell, designed with one ultimate goal: to unite with another gamete and create new life. Whether it’s a sperm or an egg, these cells are the fundamental messengers of genetic inheritance, carrying only half the chromosomes necessary to build an organism—ensuring the resulting offspring has a complete, yet unique, set of genes. gamete