middle ear. The auditory ossicles are the three smallest bones in the body, the malleus, incus, and stapes. middle ear. The auditory ossicles are the three smallest bones in the body, the malleus, incus, and stapes.
A zygote (from Greek Î¶ÏÎ³ÏÏÏÏ zygÅtos joined or yoked, from Î¶ÏÎ³Î¿á¿¦Î½ zygoun to join or to yoke), is an eukaryotic cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information necessary to form a new individual. In multicellular organisms, the zygote is the earliest developmental stage.
The zygote is diploid, meaning that it contains two sets of chromosomes. Sex Chromosomes X-Y: The male gametes or sperm cells in humans and other mammals are heterogametic and contain one of two types of sex chromosomes.