2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ob txheej txheem tau tshawb pom los ntawm cov kws tshawb fawb sib txawv. Meiosis tau tshawb pom los ntawm German biologist Oscar Hertwigthaum tus kws kho mob German W alther Flemming tau lees paub nrog qhov kev tshawb pom ntawm mitosis.
Thaum twg tau pom mitosis thiab meiosis?
W alter Flemming tau piav qhia txog tus cwj pwm chromosome thaum lub sijhawm tsiaj cell faib.
Puas yog mitosis lossis meiosis hloov zuj zus ua ntej?
The mitosis theory hais tias meiosis evolved from mitosis. Raws li qhov kev xav no, eukaryotes thaum ntxov tau hloov pauv mitosis ua ntej, tau tsim, thiab tsuas yog tom qab ntawd ua meiosis thiab kev sib deev kev sib deev tshwm sim.
Thaum twg meiosis tau pom thawj zaug?
Meiosis tau pom thawj zaug hauv hiav txwv urchin qe hauv 1876 los ntawm German biologist, Oscar Hertwig. Ib xyoo caum tom qab, Belgian zoologist, Edouard Van Beneden, tau piav qhia txog cov txheej txheem zoo sib xws hauv cov qe ntawm cov kab mob sib kis, Ascaris.
Leej twg nrhiav tau meiosis thaum twg nws nrhiav tau?
German biologist Oscar Hertwig thawj zaug pom meiosis hauv hiav txwv urchin qe xyoo 1876. Ib niam cell muaj chromosomes hauv nws cov nucleus.
Pom zoo:
Puas yog chlamydia thawj zaug pom?
Nws tau pom nyob rau hauv 1907 los ntawm Halberstaedter thiab von Prowazek uas tau pom nws hauv kev sib xyaw ua ke los ntawm kev sim kab mob orangutan. Hauv ib puas xyoo dhau los, kev tshawb nrhiav thiab kev tshawb fawb ntawm cov kab mob hauv lub cev, suav nrog chlamydiae, dhau los ntawm kev hloov pauv loj heev.
Puas yog pov thawj uas tsis pom zoo lossis tsis pom zoo nrog kev sib cav?
Cov lus foob: Ib qho kev thov uas tsis pom zoo lossis tsis pom zoo nrog qhov thesis / thov. (Qhov no yuav yog tus neeg tawm tsam qhov kev xav.) Rebuttal: Cov pov thawj uas tsis pom zoo lossis tsis pom zoo rau qhov kev foob foob. (Nov yog qhov uas tus menyuam kawm ntawv teb rau tus yeeb ncuab thiab qhia tias vim li cas lawv qhov kev sib cav tsis muaj zog.
Thawj qhov chaw lossis thawj zaug?
Txawm hais tias lawv yog ob lo lus, 'thawj' thiab 'thawj' yog qhov sib hloov tsis tau rau txhua qhov xwm txheej: peb tsis tau hais tias "Kuv xub pom nag hmo." Ib tug yuav hais. "ua ntej, koj ua dab tsi hauv kuv lub tsev?"
Puas hla dhau qhov tshwm sim hauv mitosis lossis meiosis?
Hauv mitosis, prophase, metaphase, anaphase thiab telophase tshwm sim ib zaug. Chromosomes condense thiab cov centrosomes pib tsim ib qho spindle thaum ntxov. Meiotic prophase kuv yog ntev npaum li cas mitotic prophase. Lub sijhawm prophase Kuv homologous chromosomes ua rau kev sib cuag nrog ib leeg hu ua chiasmata thiab "
Thaum thawj zaug ntawm meiosis cais dab tsi?
Nyob rau hauv meiosis, muaj ob qhov kev faib tawm nuclear uas ua rau plaub lub nuclei thiab feem ntau yog plaub tus ntxhais, txhua tus muaj ib nrab ntawm cov chromosomes raws li niam txiv cell. Thawj cais homologs, thiab qhov thib ob zoo li mitosis- cais chromatids rau hauv ib tus neeg chromosomes.
