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Sperm competition is the competitive process between spermatozoa of two or more different males to fertilize the same egg during sexual reproduction.Competition can occur when females have multiple potential mating partners. Greater choice and variety of mates increases a female's chance to produce more viable offspring. However, multiple mates for a female means each individual male has ... More @Wikipedia
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- Sperm: 15 crazy things you should know - CBS NewsHuman sperm-making machinery is a bit lazy. How else to explain the fact that 90 percent of the sperm in a man's ejaculate are deformed? Two heads, two tails, huge heads, pinheads, coiled tails ...
- Sperm | physiology | Britannica.comSperm, also called spermatozoon, plural spermatozoa, male reproductive cell, produced by most animals.With the exception of nematode worms, decapods (e.g., crayfish), diplopods (e.g., millipedes), and mites, sperm are flagellated; that is, they have a whiplike tail. In higher vertebrates, especially mammals, sperm are produced in the testes.The sperm unites with an ovum (egg) of the female to ...
- Sperm - WikipediaSperm is the male reproductive cell.In the types of sexual reproduction known as anisogamy and its subtype oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. A uniflagellar sperm cell that is motile is referred to as a spermatozoon, whereas a non-motile sperm cell is referred to as a spermatium.
- Sperm - definition of sperm by The Free Dictionarysperm 1 (spûrm) n. pl. sperm or sperms 1. A male gamete, such as a spermatozoon of an animal or one of the cells or nuclei produced by a pollen grain of a plant. Also called sperm cell. 2. Semen. [Middle English sperme, semen, from Old French esperme, from Late Latin sperma, from Greek; see sper- in Indo-European roots.] sperm′ous adj. sperm 2 ...
- Sperm | definition of sperm by Medical dictionarysperm [sperm] 1. the semen or testicular secretion. 2. spermatozoon. sperm, pl. sperms (sperm), The male gamete or sex cell that contains the genetic information to be transmitted by the male, exhibits autokinesia, and is able to effect zygosis with an oocyte. The human sperm is composed of a head and a tail, the tail being divisible into a neck, a ...
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