Biological regression nezvemuenzaniso zvimwe zvinomera nemhuka

Paleontology kwakaratidza kuti vakawanda kare dzemarudzi akanyangarika zvachose.

Progress uye shure zvakasikwa - pfungwa zvakapesana. Muchiitiko chokutanga ndicho kukura uye kuparadzirwa zvipenyu panyika. Biological regression chinhu shanduka kufamba, inozivikanwa nokuda rutapudzo pokugara, akaderedza nhamba yevanhu nemhaka maladjustment. Izvi achabatsirwa vasanyanye uwandu rimwe boka kwemarudzi yakafanira kufurirwa pamusoro pavo vamwe, uyewo kunyangarika mhuka.

Biological regression iri kunyanya nokuda kurasikirwa mano zvipenyu kuchinja kuti kuchinja mamiriro ezvinhu.

Bato Iri maitire parasitic zvipenyu, shiri uye zvisikwa vachiri kugara mumapako kana pachivande.

Biological regression anogona kunzi muenzaniso tupukanana - flatworms. Mugore neizvi kukura kwacho kunge nyore pfungwa zvomukati, zvomudumbu hurongwa, tsinga. Panguva iyoyo pane zvakasiyana mano (okupfura nawo, kubvisa nemikombe, etc.) vaifanira kuramba hondo iri dumbu. Somuenzaniso, hadzi crustaceans, makatungamirira parasitic nzira youpenyu, zvachose zvose zviratidzo arthropods, ukaramba chete mashandiro zai nokuturika. Parasitic mumuviri womunhu anokwanisa kubereka bovine tapeworm anenge mabhiriyoni gumi nerimwe mazai, izvo zvinoita kudzivirirwa vehondo muviri. Naizvozvo, izvi vanonzi akawanda makonye.

Biological regression uye chaiyo zvirimwa. Kungofanana muna zvipenyu, kukura kwavo neizvi hwakada kufanana parasitism. Somuenzaniso, pane broomrape chirimwa. Hazvina parasitic pamusoro mudzi gadziriro sunflower, apila, hemp. Broomrape ane dusky madzinde, uye ayo neshekeri-zvakadai mashizha dzisina chlorophyll. Vari akasuma vakapinda hunde yomumwe muti achibatsirwa kubvisa mikombe uye muchayamwa kunze zvinovaka muviri muviri hondo.

Animal unochengetera Kuchakati zii hwose, muviri kufamba zvachose munguva larval pachikuva. Chord mashoma dzavo. Utachiona uhwu, zvikurukuru, anorondedzera Pogonophora - mumiririri imwe mhando brahiata. vanhu ava here kufanana mhuka. Vanorarama nemuGungwa uye zvichiri kurarama. Pogonophora ane mwoyo uye uropi, zvisinei, dumbu uye muromo wake ipfupi. The tentacles muri kufema nhengo. Inside, vane refu bvudzi, akashongedzerwa nemidziyo ropa. Zvishoma nezvishoma -wedzera tusingaoneki. Vakati (tusingaoneki) anova zvikuru Pogonophora kuminyuka bvudzi mukati. Nokupesvedzera dzinokosha makemikari, tusingaoneki vari ozeyewa uye kunakidzwa zvinorwisana growths. Kuvapo embryo intestinal kunoratidza kuvapo muviri ichi madzitateguru pogonophores. Asi nokuti kuti nedanho kugaya kunoitika kunze kwemuviri, gastrointestinal nhengo aiitwa.

Regression mhuka mhenyu pevhu kana mumapako, tinogona kufunga muenzaniso Proteus. Ichi mumiririri vekirasi amphibians, sezvinoita newt. mhuka iyi anogara nomumapako. Mumusoro kumativi ose ane kwokunze gills. Proteus anogona kufema uye mumvura uye panyika. Muchiitiko chokutanga nayo anoshandisa gills, uye wechipiri - chiedza. Sezvo Proteus anogara mumapako yakadzika, ane unomonereka chimiro. muviri wake kwakanyatsojeka, Hauoneki, haana ruvara. In vakuru, vamiririri pakati nhengo wezvakaonekwa yakafukidzwa paganda, mazana meso wokugaya. Rine pamusoro muviri uye vaviri yegwara Proteus underdeveloped maoko nemakumbo.

Sezvo masero hwaro shanduka kuchinja zvichitungamirira anoitwa pasi rwesangano, ari mutation anoita.

In kukura makemikari nyika pachena zvinhu zvitatu. Aromorphosis inechirevo kuwedzera padanho sangano zvipenyu. Idioadaptation ingangova yakatorwa zvakatipoteredza pasina dzinokosha kuchinja zvipenyu marongerwo. Zvinonyatsorehwa degeneration iri anoitwa padanho sangano zvipenyu.