Gametes

x = //Fertilization// = // In the human life cycle, sexual intercourse allows a haploid sperm cell from the father to reach and fuse with a haploid egg cell of the mother in the process of fertilization. Fertilization involving certain types of abnormal gametes result in offspring with chromosomal abonormalities. //

 =Gametes = **Humans are said to be diploid organisms because almost all our cells are diploid. The exceptions are the egg and sperm cells, collectively know as gametes. Each gamete has a single set of chromosomes: 22 autosomes plus a single sex chromosome, either X or Y. **



 =Haploid = **A cell with a single chromosome set is called a haploid cell. For humans, the haploid number (abbreviated n) is 23. **



Zygote

