Polyploid Complex

A polyploid complex, also called a diploid-polyploid complex, is a group of interrelated and interbreeding species that also have differing levels of ploidy that can allow interbreeding.

A polyploid complex was described by E. B. Babcock and G. Ledyard Stebbins in their 1938 monograph The American Species of Crepis: their interrelationships and distribution as affected by polyploidy and apomixis. In Crepis and some other perennial plant species, a polyploid complex may arise where there are at least two genetically isolated diploid populations, in addition to auto- and allopolyploid derivatives that coexist and interbreed. Thus a complex network of interrelated forms may exist where the polyploid forms allow for intermediate forms between the diploid species that are otherwise unable to interbreed.

This complex situation does not fit well within the biological species concept of Ernst Mayr which defines a species as "groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups".

In many diploid-polyploid complexes the polyploid hybrid members reproduce asexually while diploids reproduce sexually. Thus polyploidy is related to the phenomenon called "geographic parthenogenesis" by zoologist Albert Vandel, that asexual organisms often have greater geographic ranges than their sexual relatives. It is not known which of the associated factors is the major determiner of geographic parthenogenesis, hybridization, polyploidy, or asexual reproduction.

See also

References

Tags:

InterbreedingPloidy

🔥 Trending searches on Wiki English:

Ben AffleckNicholas GalitzineTaylor SwiftCosmo JarvisJoey GraziadeiI-35W Mississippi River bridgeEarthList of highest-grossing filmsEdmund RuffinPrithviraj SukumaranJoseph Stalin2019 Indian general election2026 FIFA World CupFuture (rapper)The Amanda ShowLeave the World Behind (film)DesmostylusKristen Wiig2024 Miami OpenKhabib NurmagomedovLiverpool F.C.Soviet UnionAl B. Sure!Bassirou Diomaye FayeChelsea ManningSex positionIppei MizuharaJake Paul vs. Mike TysonFritzl caseTurkeyBarbie (film)Kanye WestList of solar eclipses visible from the United StatesCharly ArnoltAnsel AdamsRosalind ChaoPriss FotheringhamFrancis Scott Key Bridge collapseArgentina national football teamRichard PitinoMiranda CosgroveLove Lies Bleeding (2024 film)BaltimoreShōgun (2024 miniseries)Malaysia Airlines Flight 3702024 Senegalese presidential electionR. KellyRonald ReaganSonam Wangchuk (engineer)Robert De NiroStephen BreyerHelldivers 2United StatesXXX (film series)HaitiContinuous truss bridgeFlipkartMuhammad AliFlorence PughAdolf HitlerIlya IvanovTasman Bridge disasterLes FerdinandMao ZedongEuropeMV DaliRobert PattinsonFIFA Men's World RankingVal KilmerNational Basketball AssociationCharles LeclercIslamic State – Khorasan ProvinceBrandon ScottAlyson HanniganKangana RanautThe White LotusTheodor Morell🡆 More