Parthenogenesis, ib lub tswv yim kev yug me nyuam uas cuam tshuam txog kev loj hlob ntawm poj niam (tsis tshua muaj txiv neej) gamete (sex cell) tsis muaj fertilization. … Ib lub qe uas tsim parthenogenetically tej zaum yuav yog haploid (piv txwv li, nrog ib pawg ntawm cov chromosomes sib txawv) los yog diploid (piv txwv li, nrog ib khub ntawm chromosomes).
txhais li cas los ntawm parthenogenesis?
Parthenogenesis yog ib hom kev yug me nyuam uas lub qe tuaj yeem loj hlob mus rau hauv lub embryo yam tsis tau fertilized los ntawm cov phev. Parthenogenesis yog muab los ntawm cov lus Greek rau "kev yug me nyuam," thiab ntau hom kab xws li aphids, muv, thiab ntsaum yog paub los ntawm kev yug me nyuam los ntawm parthenogenesis.
Leej twg tsim lo lus parthenogenesis?
In 1849 Professor Owen, nyob rau hauv nws cov lus qhuab qhia ntawm "Parthenogenesis," muab tso rau lwm qhov kev xav.
Parthenogenesis piv txwv yog dab tsi?
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.
Puas parthenogenesis tshwm sim hauv tib neeg?
Spontaneous parthenogenetic thiab androgenetic txheej xwm tshwm sim nyob rau hauv tib neeg, tab sis lawv ua rau qog: lub zes qe menyuam teratoma thiab hydatidiform mole, feem.
