Sperm incorporation commonly ( Bi et al., 2008 ) takes the form of genome addition ( resulting in ploidy elevation in the offspring ), or genome replacement, wherein one of the maternal genomes is discarded.

Sperm is drawn into a female's gills with the inhalant water and internal fertilization takes place.

Sperm was found in Linda's clothing ; however William had previously had a vasectomy, a form of sterilization which makes a man incapable of emitting sperm.

Sperm concentrations and motility perimeters are reduced in male fish exposed to xenoestrogens in addition to disrupt stages of spermatogenesis.

Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring ( excluding, in most cases, mitochondrial DNA ).

Sperm cells that give rise to female ( XX ) offspring after fertilization differ in that they carry an X-chromosome, while sperm cells that give rise to male ( XY ) offspring carry a Y-chromosome.

Sperm competition is often compared to having tickets in a raffle ; a male has a better chance of winning ( i. e. fathering offspring ) the more tickets he has ( i. e. the more sperm he inseminates a female with ).

Ectogenesis could also be a means by which homosexuals could have genetic offspring without the use of a Surrogate pregnancy or Sperm Donor, and allow women to have children without going through the pregnancy cycle.

Non-fertile sperm delay or prevent the female mating again, thus allowing the male producing the non-fertile sperm a greater share of the paternity of her offspring ( because the male avoids Sperm competition ).

* Cetaceans include toothed whales ( Suborder Odontoceti ), such as the Sperm Whale, dolphins, and porpoises such as the Dall's porpoise.

The candle can be made of paraffin ( a byproduct of petroleum refining ), microcrystalline wax, stearin ( now produced almost exclusively from palm waxes though initially manufactured from animal fats ), beeswax ( a byproduct of honey collection ), gel ( a mixture of polymer and mineral oil ), some plant waxes ( generally palm, carnauba, bayberry, or soybean wax ), tallow ( rarely used since the introduction of affordable and cheap wax alternatives ) or spermaceti ( extracted from the head of a Sperm Whale ).

Sperm develop within the antheridia. In a willow, microspores are not liberated from the anther ( the microsporangium ), but develop into pollen grains ( microgametophytes ) within it.

The cost of Cryo-preservation ( Sperm Banking ) itself may also be substantially less ( approximately $ 500 every 5 years ) than alternative Vaso-vasectomy procedure ( s ), ( est surgery cost of $ 10, 000 ); however the costs of In-vitro fertilization which are rarely below $ 10, 000 US, and usually run between $ 12 – 15, 000 US, must be considered.

Sperm whales use low frequencies ( a few to perhaps 50 Hz ), while others employ more narrow-band high-frequency sounds ( porpoises, Cephalorhynchus species like Hector's dolphin ).

* Pygmy and Dwarf Sperm Whales by Donald F. McAlpine in Encyclopedia of Marine Mammals ( 2002 ), San Diego: Academic Press, pp. 1007 – 1009, ISBN 0-12-551340-2

The people of Lamalera hunt several species of whale, primarily Sperm Whale ( Baleen Whale is taboo ), and in the peak year of 1969 caught 56 sperm whales.

's change of style between their self-titled debut ( 1992 ) and its successor Sperm ( 1994 ), leaning more heavily to a guitar-driven metal sound without giving up their electronic roots, inspired numerous musicians, most famously Rammstein, Megaherz and Eisbrecher to follow their lead.

William Levy ( born January 10, 1939 ), also known as the Talmudic Wizard of Amsterdam, is an American writer, editor and former radio personality, and the author of such works as The Virgin Sperm Dancer, Wet Dreams, Certain Radio Speeches of Ezra Pound and Natural Jewboy.

* Atlas of Fine Structure of Human Sperm Penetration, Eggs, and Embryos Cultured In Vitro, by A. Henry Sathananthan ( Author ), Alan O. Trounson ( Author ), Carl Wood ( Author ), November 1985, ISBN 0-275-91308-2

Sperm whale ( Physeter macrocephalus ), the most important prey of Nantucket whaling fleet, which operated principally in the Pacific Ocean and Indian Ocean.

Sperm were first observed in 1677 by Antonie van Leeuwenhoek using a microscope, he described them as being animalcules ( little animals ), probably due to his belief in preformationism, which thought that each sperm contained a fully formed but small human.

Shiretoko Peninsula is one of the few places where groups of male Sperm Whales and Baird's Beaked Whales can be spotted from the shore.

Sperm is killed and broken down by acid in the stomach and digestive enzymes in the small intestine.

File: Sperms ( urine )-Spermler ( idrar )-01. png | Sperm cells in the urine sample of a 45 year old male patient who is being followed with the diagnosis of benign prostate hyperplasia.

Sperm hyperactivity is necessary for breaking through two physical barriers that protect the egg from fertilization.

Sperm is matured in the epididymis for about a month before leaving the testicles.

Sperm can be aspirated from the testicles or the epididymis, and while there is not enough for successful artificial insemination, there is enough to fertilize an ovum by ICSI.

Sperm is released by the male directly into the water and enters the female via the incurrent siphon.

#" Every Sperm is Sacred " – 4: 34

The skit culminates in the musical number " Every Sperm is Sacred ".

Sperm is usually obtained through masturbation or the use of an electrical stimulator, although a special condom, known as a collection condom, may be used to collect the semen during intercourse.

Sperm banks and fertility clinics usually offer ' washed ' semen for this purpose, but if partner sperm is used it must also be ' washed ' by a medical practitioner to eliminate the risk of cramping.

Melville is said to have taken part of his inspiration for Moby-Dick from the view of the mountain from his house Arrowhead in Pittsfield, since its snow-covered profile reminded him of a great white Sperm Whale's back breaking the ocean's surface.

Sperm that carry a Y chromosome, for example, is supplied with essential molecules that are encoded by genes on the X chromosome.

However Kaikoura has now become a popular tourist destination, mainly for whale watching ( the Sperm Whale watching is perhaps the best and most developed in the world ) and swimming with or near dolphins.

Sperm is produced in the testes and enters the ejaculatory ducts via the vas deferens.

In May 2005, bassist Álvaro Díez is expelled from the group and replaced by Samuel Titos, former guitarist and vocalist of ' Sperm '.

Sperm competition is a term used to refer to the competitive process between spermatozoa of two or more different males to fertilize an egg, of a lone female.

Sperm competition is an evolutionary pressure on males, and has led to the development of adaptations to increase males ' chance of reproductive success.

Sperm hyperactivity is necessary for breaking through two physical barriers that protect the egg from fertilization.

#" Every Sperm is Sacred "