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Asexual Reproduction In Animals
Asexual or Asexuals may refer to: *Asexual reproduction **Asexual reproduction in starfish *Asexuality, the lack of sexual attraction to anyone or lack of interest in or desire for sexual activity. **Gray asexuality, the spectrum between asexuality and sexuality *Asexuals (band) The Asexuals (or Asexuals) is a hardcore punk band from Beaconsfield that was a mainstay of the Montreal punk scene in the 1980s before changing into an alternative band following the departure of singer John Kastner. Kastner left to form the Do ..., a Canadian punk rock band See also * * Sexlessness (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexual Reproduction
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and physically similar to the parent or an exact clone of the parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and eubacteria, bacteria. Many Eukaryote, eukaryotic organisms including plants, animals, and Fungus, fungi can also reproduce asexually. In vertebrates, the most common form of asexual reproduction is parthenogenesis, which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. Komodo dragons and some monitor lizards can also reproduce asexually. While all prokaryotes reproduce without the formation and fusion of gametes, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexual Reproduction In Starfish
Asexual reproduction in starfish takes place by fission or through autotomy of arms. In fission, the central disc breaks into two pieces and each portion then regenerates the missing parts. In autotomy, an arm is shed with part of the central disc attached, which continues to live independently as a "comet", eventually growing a new set of arms. Although almost all sea stars can regenerate their limbs, only a select few sea star species are able to reproduce in these ways. Fission Fissiparity in the starfish family Asteriidae is confined to the genera ''Coscinasterias'', '' Stephanasterias'' and ''Sclerasterias''. Another family in which asexual reproduction by fission has independently arisen is the Asterinidae. The life span is at least four years. A dense population of '' Stephanasterias albula'' was studied at North Lubec, Maine. All the individuals were fairly small, with arm lengths not exceeding , but no juveniles were found, suggesting that there had been no recent larva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexuality
Asexuality is the lack of sexual attraction to others, or low or absent interest in or desire for sexual activity. It may be considered a sexual orientation or the lack thereof. It may also be categorized more widely, to include a broad spectrum of asexual sub-identities. Asexuality is distinct from abstention from sexual activity and from celibacy, which are behavioral and generally motivated by factors such as an individual's personal, social, or religious beliefs. Sexual orientation, unlike sexual behavior, is believed to be "enduring". Some asexual people engage in sexual activity despite lacking sexual attraction or a desire for sex, for a number of reasons, such as a desire to physically pleasure themselves or romantic partners, or a desire to have children. Acceptance of asexuality as a sexual orientation and field of scientific research is still relatively new, as a growing body of research from both sociological and psychological perspectives has begun to deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gray Asexuality
Gray asexuality, grey asexuality, or gray-sexuality is the spectrum between asexuality and sexuality. Individuals who identify with gray asexuality are referred to as being gray-A, gray ace, or grace, and make up what is referred to as the "ace umbrella". Within this spectrum are terms such as demisexual, semisexual, asexual-ish and sexual-ish. The emergence of online communities, such as the Asexual Visibility and Education Network (AVEN), has given gray aces locations to discuss their orientation. Definitions General Gray asexuality is considered the gray area between asexuality and sexuality, in which a person may only experience sexual attraction on occasion. The term ''demisexuality'' was coined in 2006 by Asexual Visibility and Education Network (AVEN). The prefix ''demi-'' derives from the Vulgar Latin , which comes from Latin , meaning "divided into two equal parts, halved." The term ''demisexual'' comes from the concept being described as being "halfway between" s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexuals (band)
The Asexuals (or Asexuals) is a hardcore punk band from Beaconsfield that was a mainstay of the Montreal punk scene in the 1980s before changing into an alternative band following the departure of singer John Kastner. Kastner left to form the Doughboys and later, All Systems Go!. History The Asexuals formed in 1983 when Sean Friesen, T.J. Collins and Paul Remington, all Beaconsfield High students, decided to start a punk rock band. Another Beaconsfield native, future actor Al Goulem, was in the band as second guitarist for a few months with Collins singing. Their friend John Kastner quickly joined and became the singer. After briefly using the names "Commonwealth", "Dead Dog", "Johnny Jew and the Holocaust" and "VD Teens", they finally chose the name "Asexuals" because none of the band members had girlfriends at the time. Their music mixed elements of hardcore as well as more melodic punk rock à la The Nils or Hüsker Dü. 1984–1985: ''Be What You Want'', ''Contemporary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
