Video: Yuav ua li cas muaj ntau yam genotypes muaj peev xwm rau lub tsho tiv no Xim nyob rau hauv luav?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Plaub txawv alleles muaj rau lub tsho tiv no xim (C) noob.
Ib yam li ntawd, koj tuaj yeem nug, muaj pes tsawg tus genotypes ua tau rau tus luav nrog cov xim grey tag nrho?
Lub tsho tiv no xim hauv luav yog nyob rau hauv tus tswj ntawm ib lub noob nrog plaub alleles: C ( xim grey tag nrho );
Kuj Paub, dab tsi genotypes ua tau rau ib tug luav nrog plaub? Txij li qhov chaw muaj ob lub noob, muaj 4 qhov ua tau ntawm qhov chaw no: BB, bb, Bb, bB. Txij li thaum dub yog kiag li dominant, yog hais tias koj muaj ib tug luav uas muaj tsawg kawg ib B ntawm qhov chaw no, tus luav yuav muaj dub hauv nws plaub . Yog li, luav muaj tus Kev sib xyaw ntawm cov noob: BB, Bb, lossis bB yuav muaj xim dub hauv nws plaub.
Tsis tas li ntawd, yuav ua li cas luav muaj ntau dua ob lub tsho sib txawv?
Luav tuaj yeem muaj ntau txawv lub tsho tiv no xim vim lawv muaj ntau alleles rau lub tsho tiv no xim . Qhov no tsis tshua muaj vim xim qhov muag tsis pom tsuas yog pom nyob rau hauv x noob thiab ib tug poj niam muaj 2 x noob, yog li yog tias ib qho ntawm nws x noob muaj qhov tsis zoo nws muaj feem zoo dua ntawm nws lwm x noob tau ua tus thawj thiab overriding nws.
Dab tsi yog qhov tseem ceeb plaub xim hauv luav?
Agouti coloration yog tseem ceeb . Nws tsuas yog siv 1 agouti noob los tsim Agouti luav vim gene tseem ceeb . Cov xim dub tawv yog qhov tsis zoo (tseem hu ua 'tus kheej' xim ). Kom muaj lub tsho dub, lub luav yuav tsum tau txais ob lub noob qoob loo-xim xim, ib qho los ntawm ob niam txiv.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Dab tsi yog qhov txawv ntawm electrostatic muaj peev xwm thiab electrostatic muaj peev xwm zog?
Tsis muaj qhov sib txawv ntawm electrostatic potentialenergy thiab hluav taws xob (al) muaj peev xwm zog. Lub peev xwm hluav taws xob ntawm ib qho taw tes yog kev ua haujlwm los ntawm lwm qhov kev quab yuam hauv kev txav chav tsev zoo los ntawm ib qho arbitrarilychosen xoom ntawm lub peev xwm (feem ntau infinity) mus rau lub ntsiab lus
Puas muaj peev xwm hluav taws xob thiab lub zog muaj peev xwm tib yam Vim li cas lossis vim li cas ho tsis?
Lub zog muaj peev xwm hluav taws xob Ue yog lub zog muaj peev xwm khaws cia thaum cov nqi tawm ntawm qhov sib npaug (xws li lub zog muaj peev xwm gravitational). Lub peev xwm hluav taws xob zoo ib yam, tab sis ib tus nqi, Ueq. Ib qho hluav taws xob muaj peev xwm sib txawv ntawm ob lub ntsiab lus hu ua voltage, V = Ue2q−Ue1q
Yam dab tsi ntawm cov dej zoo tshaj plaws piav qhia nws lub peev xwm los yaj ntau yam khoom siv?
Vim tias nws cov polarity thiab muaj peev xwm tsim cov ntawv cog lus hydrogen, dej ua rau cov kuab tshuaj zoo heev, txhais tau tias nws tuaj yeem yaj ntau hom molecules
Puas muaj peev xwm equilibrium zoo ib yam li so muaj peev xwm?
Qhov sib txawv ntawm daim nyias nyias muaj peev xwm thiab qhov muaj peev xwm sib npaug (-142 mV) sawv cev rau lub zog hluav taws xob hluav taws xob uas tsav Na + mus rau hauv lub xovtooj ntawm lub peev xwm so membrane. Thaum so, txawm li cas los xij, qhov permeability ntawm daim nyias nyias mus rau Na + tsawg heev kom tsuas yog me me Na + xau rau hauv lub cell