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Sperm is the male gamete or the reproductive cell of a male. The sperm cell has a function similar to a seed, which is giving rise to a new similar organism. Usually, the sperm cells of animals are motile and sperm cells of plants are non-motile but there are some ferns that have motile sperms. The human sperm cell contains only 23 chromosomes which means that it is haploid. The sperm cells are formed in the seminiferous tubules of the male testes. This process is called spermatogenesis.
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Sperm - Wikipedia
NCBI Bookshelf. Molecular Biology of the Cell. New York: Garland Science; In most species, there are just two types of gamete , and they are radically different. The egg is among the largest cells in an organism, while the sperm spermatozoon , plural spermatozoa is often the smallest. The egg and the sperm are optimized in opposite ways for the propagation of the genes they carry.
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Male infertility is an increasing problem partly due to inherited genetic variations. Mutations in genes involved in formation of the sperm tail cause motility defects and thus male infertility. Therefore, it is crucial to understand the protein networks required for sperm differentiation. Sperm motility is produced through activation of the sperm flagellum, which core structure, the axoneme, resembles motile cilia.
Sperm cells are gametes sex cells that are produced in the testicular organ gonad of male human beings and animals. Like the female gamete oocyte , sperm cells carry a total of 23 chromosomes that are a result of a process known as meiosis. In both animals and human beings, among many other organisms, these cells are involved in the sexual mode of reproduction which involves the interaction of male and female gametes. The general morphology of sperm cells consists of the following parts:.