Tiedemiehet on todistanu yhden kiistanalaisen evoluutiomekanismin, Tässä on aluks tietoa.
>The Meselson Effect[edit]
The "Meselson effect” is the process by which the two alleles, or copies of a gene, in an asexual diploid organism evolve independently of each other, becoming increasingly different over time. In sexual organisms the processes of recombination and independent assortment allow both of the alleles within an individual to descend from a recent single ancestral allele. Without recombination or independent assortment alleles cannot descend from a recent ancestral allele. Instead the alleles share a last common allelic ancestor at or just preceding the loss of meiotic recombination.[18] A striking example of this effect was described in bdelloid rotifers where the two alleles of the lea gene have diverged into two different genes which work together to preserve the organism during periods of dehydration.[19] The Meselson effect should cause entire copies of an organism's genome to diverge from each other, effectively reducing all anciently asexual organisms to a haploid state, in a process similar to the diploidization following whole genome duplication.
https://en.wikipedia.org/wiki/Matthew_Meselson#The_Meselson_Effect
Uusi tutkimus
>Evolutionary theory predicts that pairs of chromosomes within asexual organisms will evolve independently of each other and become increasingly different over time in a phenomenon called the 'Meselson effect'.
While this event was first predicted almost twenty years ago, evidence for it has proved elusive.
Now, researchers from the University of Glasgow have demonstrated the Meselson effect for the first time in any organism at a genome-wide level, studying a parasite called Trypanosoma brucei gambiense (T.b. gambiense). Their findings are to be published in the journal eLife. The research was conducted at the Wellcome Trust Centre for Molecular Parasitology in the University's Institute of Biodiversity Animal Health and Comparative Medicine.
http://phys.org/news/2016-01-scientists-key-aspect-evolutionary-theory.html?utm_source=menu&utm_medium=link&utm_campaign=item-menu
>The Meselson Effect[edit]
The "Meselson effect” is the process by which the two alleles, or copies of a gene, in an asexual diploid organism evolve independently of each other, becoming increasingly different over time. In sexual organisms the processes of recombination and independent assortment allow both of the alleles within an individual to descend from a recent single ancestral allele. Without recombination or independent assortment alleles cannot descend from a recent ancestral allele. Instead the alleles share a last common allelic ancestor at or just preceding the loss of meiotic recombination.[18] A striking example of this effect was described in bdelloid rotifers where the two alleles of the lea gene have diverged into two different genes which work together to preserve the organism during periods of dehydration.[19] The Meselson effect should cause entire copies of an organism's genome to diverge from each other, effectively reducing all anciently asexual organisms to a haploid state, in a process similar to the diploidization following whole genome duplication.
https://en.wikipedia.org/wiki/Matthew_Meselson#The_Meselson_Effect
Uusi tutkimus
>Evolutionary theory predicts that pairs of chromosomes within asexual organisms will evolve independently of each other and become increasingly different over time in a phenomenon called the 'Meselson effect'.
While this event was first predicted almost twenty years ago, evidence for it has proved elusive.
Now, researchers from the University of Glasgow have demonstrated the Meselson effect for the first time in any organism at a genome-wide level, studying a parasite called Trypanosoma brucei gambiense (T.b. gambiense). Their findings are to be published in the journal eLife. The research was conducted at the Wellcome Trust Centre for Molecular Parasitology in the University's Institute of Biodiversity Animal Health and Comparative Medicine.
http://phys.org/news/2016-01-scientists-key-aspect-evolutionary-theory.html?utm_source=menu&utm_medium=link&utm_campaign=item-menu
Vastaukset 4
Vanhimmat
Mutta missä on bibleisti? Eikös hänen pitäisi kiireen vilkkaan tulla kertomaan että kaiken takana on epigeneettinen Jeesus?
Vai olisiko hän jo itsekin ymmärtänyt mokailleensa niin raskaasti, että on jäänyt häpeälomalle ja kommentoi vain satunnaisnikeillä (esimerkiksi tuo seksuaalivalintaketju?).
Aika säälittävää, että teillä ei ole lainkaan luovuutta ajatella tällaista asiaa ihan loogiselta pohjalta. Tällaisia asioita tutkiskelen joka päivä, jotka ovat teille täysin mielenräjäyttäviä. Me eroamme sillä tavalla, että minä osaan arvostaa kuinka mahtavaa tällaiset asiat ovat ja teille se on vain se päivän naurahdus siellä työkoneella - jotain, mitä näytätte työkaverillenne ja unohdatte heti seuraavan röyhtäyksen jälkeen.
Onko nuo lauantainakin töissä?
Ehkä tuo tutkimus on niin tyrmäävä ettei kehtaa.