2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ntau hom kev yug me nyuam tau pom nyob rau hauv rotifers. Qee hom tsuas yog cov poj niam uas tsim lawv cov ntxhais los ntawm cov qe tsis muaj menyuam, ib hom kev yug me nyuam hu ua parthenogenesis. Hauv lwm lo lus, cov hom kab mob no tuaj yeem txhim kho los ntawm lub qe tsis muaj menyuam, asexually.
Pob rotifers qhia parthenogenesis?
Cov chav kawm Rotifera suav nrog cov tsiaj uas rov tsim dua los ntawm apomictic poj niam parthenogenesis thiab hom uas hloov qhov "asexual" kev tsim tawm nrog kev sib deev zoo tib yam. … Rotifers yog opportunistic lossis colonizing kab mob, uas txhais tau hais tias xaiv rau kev loj hlob sai.
Yuav ua li cas rotifers reproduce?
Lub phylum Rotifera nyob rau hauv peb chav kawm uas rov tsim dua los ntawm peb txoj kev sib txawv: Seisonidea tsuas yog tsim kev sib deev; Bdelloidea reproduce nkaus xwb los ntawm asexual parthenogenesis; Monogononta reproduce alternating ob mechanisms ("cyclical parthenogenesis" los yog "heterogony").
poj niam rotifers yug li cas?
Cov poj niam amictic pib kev sib deev los ntawm producing mictic (sexual) ntxhais. … Cov poj niam mictic tsim los ntawm meiosis, haploid (n) qe, feem ntau me dua amictic qe. Tsuas yog nyob rau hauv ib txhais tes ntawm hom yog tib tug poj niam (hu ua 'amphoteric') muaj peev xwm tsim tau ob leeg txiv neej thiab poj niam xeeb tub.
Puas parthenogenesis tshwm sim hauv qaib ntxhw?
INTRODUCTION. Qaib thiabCov qe qaib ntxhw yog muaj peev xwm tsim cov txiv neej embryos yam tsis muaj fertilization los ntawm parthenogenesis (Olsen, 1975). Txawm hais tias lub qe tsis muaj menyuam yog haploid, qaib ntxhw parthenogens muaj feem ntau cov hlwb diploid.
Pom zoo:
Puas yog rov tshwm sim dua lossis rov tshwm sim dua?
Reoccur thiab recur yog verbs uas qhia ib lo lus hauv paus. Thaum lawv nyob ze heev ntawm lub ntsiab lus, lawv tsis zoo ib yam. Tej yam uas yog rov tshwm sim dua thiab dhau mus, tej zaum nyob rau ib ntus. Hauv qhov sib piv, ib yam dab tsi uas rov tshwm sim tsuas yog tshwm sim dua tab sis tsis tas yuav rov ua dua.
Rau qhov tshwm sim tshwm sim?
Cov tshuaj tiv thaiv tus kheej yogtawm tsam uas nyiam tsim cov khoom ntawm cov xwm txheej uas tshwm sim. … Qhov kev sib xyaw ua ke ntawm kev txo qis ntawm lub zog thiab qhov nce hauv entropy txhais tau hais tias cov tshuaj tiv thaiv combustion tshwm sim tsis tu ncua.
Thaum twg pfizer tshwm sim tshwm sim?
Qee yam tshwm sim tshwm sim txoj cai tom qab koj txhaj tshuaj, zoo li mob me me hauv koj txhais caj npab. Lwm tus yuav siv sij hawm ntau teev los txhim kho. Nco ntsoov tias nrog ob koob tshuaj tiv thaiv zoo li Pfizer-BioNTech thiab Moderna, koj tuaj yeem pom muaj kev phiv ntau dua tom qab txhaj tshuaj thib ob.
Puas tau tshwm sim lossis tshwm sim?
Qhov kev qhia "tshwm sim" tsis tuaj yeem siv qhov khoom ncaj qha, thiab yog li ntawd nws tsis muaj daim ntawv passive, yog li tsis muaj "yog/was/be tshwm sim" tense. Puas tau tshwm sim los yog tshwm sim? Ob daim ntawv yog grammatically raug (tsis sib xws rau kev hais lus ntawm qee cov lus Askiv purists).
Puas tsis muaj qhov tshwm sim tshwm sim xav tau enzymes?
Tam sim no, enzymes TSIS ua rau cov tshuaj tiv thaiv tsis yog tus kheej. Txawm li cas los xij, enzymes ua kom nrawm nrawm ntawm cov tshuaj tiv thaiv tus kheej. Yeej, lawv ua kom cov tshuaj tiv thaiv sai dua. Enzymes ua qhov no los ntawm kev txo qis kev ua kom lub zog ntawm cov tshuaj tiv thaiv.
