In the 17th thiab 18th centuries lub tswv yim ntawm preformation tau qhia. Cov kws tshawb fawb siv lub tshuab ntsuas ntsuas tshiab tau xav txog tias… Ib qho kev xav uas tau nthuav dav ntawm cov kws tshaj lij biologist hauv xyoo pua 18th yog tus me nyuam hauv plab, thiab yog li cov neeg laus cov kab mob uas tsim los ntawm nws, yog preformed nyob rau hauv cov poj niam hlwb.
Leej twg tuaj nrog preformationism?
Jan Swammerdam thiab Marcellus Malpighi yog cov txiv ntawm kev tshawb fawb ntau dua li Harvey. Swammerdam tau ua haujlwm nrog cov kab xws li silkworms, mayflies, thiab butterflies hauv xyoo 1660 hauv kev sim kom nkag siab zoo txog cov txheej txheem metamorphosis.
Vim li cas preformationism tsis raug?
Preformationism, tshwj xeeb tshaj yog ovism, yog qhov kev xav tseem ceeb ntawm tiam thaum xyoo pua 18th. Nws tau sib tw nrog cov tiam neeg thiab cov txheej txheem, tab sis ob txoj kev xav no feem ntau tsis lees paub vim tias teeb meem tsis tuaj yeem tsim lub neej yam tsis muaj Vajtswv cuam tshuam.
Kev xav kev xav yog dab tsi?
Kev Ua Haujlwm / Kev Ua Haujlwm Txoj Cai - muab los ntawm C. Bonnet hauv xyoo 1770, hais tias poj niam encapsulates cov kab mob preformed ntawm cov tiam tom ntej ib qho hauv lwm qhov. Qhov kev xav no tau muab pov tseg thaum qhov tseem ceeb ntawm ob lub qe thiab phev tau piav qhia los ntawm CF Wolff. Daim duab: Homunculus hauv tib neeg. phev.
Qhov txawv ntawm epigenesis thiab preformation yog dab tsi?
Raws li lub npe qhov txawv ntawm epigenesis thiab preformation
yog qhov ntawdepigenesis yog (biology) txoj kev xav tias lub cev tsim los ntawm kev sib txawv ntawm lub qe tsis muaj qauv es tsis yog los ntawm kev loj hlob ntawm ib yam dab tsi preformed thaum preformation yog ua ntej tsim.
