parthenogenesis, lub tswv yim kev ua me nyuam uas muaj feem cuam tshuam txog kev loj hlob ntawm tus poj niam (tsis tshua muaj txiv neej) gamete (sex cell) yam tsis muaj fertilization. Nws tshwm sim feem ntau ntawm cov nroj tsuag qis thiab cov tsiaj tsis muaj pob txha (tshwj xeeb tshaj yog rotifers, aphids, ants, wasps, thiab muv) thiab tsis tshua muaj cov vertebrates siab dua.
Puas parthenogenesis tshwm sim hauv cov nroj tsuag?
Nws naturally happens nyob rau ntau hom nroj tsuag thiab tsiaj txhu. Nyob rau hauv cov nroj tsuag, parthenogenesis feem ntau pom muaj nyob rau hauv ua ke nrog apomeiosis (lub omission ntawm meiosis) thiab pseudogamous los yog autonomous (nrog los yog tsis muaj central cell fertilization) endosperm tsim, ua ke hu ua apomixis (clonal noob qoob loo).
qhov twg parthenogenesis suav nrog?
Parthenogenesis tshwm sim nyob rau hauv qee nroj tsuag, qee yam tsiaj txhu tsis muaj qab hau (xws li nematodes, qee qhov tardigrades, dej fleas, qee cov scorpions, aphids, qee cov mites, qee cov muv, qee cov Phasmatodea thiab parasitic wasps) thiab ob peb vertebrates (xws li qee cov ntses, amphibians, cov tsiaj reptiles thiab tsis tshua muaj noog).
Vim li cas parthenogenesis tshwm sim?
Parthenogenesis yog kev hloov pauv lub tswv yim los xyuas kom muaj kev tsim tawm ntawm cov kab mob thaum cov xwm txheej tsis zoo rau kev sib deev Asexual reproduction tuaj yeem ua tau zoo rau cov kab mob uas yuav tsum nyob hauv ib puag ncig thiab hauv qhov chaw uas cov phooj ywg tsis tshua muaj.
Dab tsi yog parthenogenesis nrog piv txwv?
Piv txwv ntawm Parthenogenesis. Parthenogenesis tshwm sim nyob rau hauv rotifers, daphnia, nematodes, aphids, nrog rau lwm yam invertebrates thiab nroj tsuag. Ntawm cov vertebrates, noog, nab, sharks, thiab lizards yog tib hom uas muaj peev xwm yug me nyuam los ntawm nruj parthenogenesis.
