Video: Puas yog dov ntawm tus nplaig dominant lossis recessive?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus nplaig dov muaj peev xwm yuav yog vim muaj ib lub noob muaj peev xwm yob tus nplaig a tseem ceeb qhov zoo thiab qhov tsis muaj nplaig dov peev a rov ua dua qhov zoo. Txawm li cas los xij, muaj qee lo lus nug txog qhov qub txeeg qub teg ntawm nplaig dov . Cov kev tshawb fawb tsis ntev los no tau pom tias nyob ib ncig ntawm 30% ntawm cov menyuam ntxaib zoo tib yam tsis qhia qhov zoo.
Kuj nug, yog dov tus nplaig tseem ceeb?
Rolling tus nplaig rau hauv ib lub raj zoo yog feem ntau piav raws li a tseem ceeb Kev zoo nkauj nrog Mendelian qub txeeg qub teg, thiab nws yog feem ntau hais txog hauv kev qhia txog keeb kwm thiab keeb kwm ntawm keeb kwm biology.
Kuj Paub, hom kev hloov pauv twg yog tus nplaig dov? Tus nplaig dov yog ib qho piv txwv ntawm kev hloov pauv tsis tu ncua: koj tuaj yeem yob koj tus nplaig lossis koj ua tsis tau. Lwm yam ntxwv, piv txwv li qhov siab thiab hnyav , qhia nruam variation. Cov neeg tuaj nyob rau hauv tag nrho cov duab thiab ntau thiab tsawg.
Tom qab ntawd, ib tug kuj nug, txhua tus tuaj yeem yob lawv tus nplaig?
Txhua tus paub ib txhia neeg tuaj yeem yob lawv tus nplaig thiab ib co ua tau 't-thiab tias lub peev xwm tau txais los ntawm ib tus niam txiv. Nws tau pom tias kwv yees li 70 feem pua ntawm cov menyuam ntxaib sib npaug sib koom nplaig - dov qhov zoo. “Yog nplaig dov yog cov noob caj noob ces zoo tib yam, cov menyuam ntxaib yuav zoo ib yam.
Puas yog dimples recessive lossis dominant?
Dimples -indentations ntawm lub puab tsaig-zoo li tshwm sim nyob rau hauv tsev neeg, thiab qhov zoo li no yog xav tias yuav tau txais qub txeeg qub teg. Dimples feem ntau suav hais tias yog a tseem ceeb genetic trait, uas txhais tau hais tias ib daim qauv ntawm cov noob hloov nyob rau hauv txhua lub cell yog txaus los ua dimple.
Pom zoo:
Muaj pes tsawg cov noob tswj tus nplaig dov?
Qhov no tsis tau txhais hais tias tus nplaig dov tsis muaj caj ces "kev cuam tshuam," McDonald hais. Ntau tshaj ib lub noob tuaj yeem ua rau muaj peev xwm ntawm tus nplaig. Tej zaum tib cov noob uas txiav txim siab tus nplaig qhov ntev lossis cov leeg nqaij muaj kev koom tes. Tab sis tsis muaj ib qho tseem ceeb gene uas yog lub luag haujlwm
Hom kev hloov pauv li cas yog tus nplaig dov?
Tus nplaig dov yog ib qho piv txwv ntawm kev hloov pauv tsis tu ncua: koj tuaj yeem yob koj tus nplaig lossis koj ua tsis tau. Lwm cov yam ntxwv, piv txwv li qhov siab thiab qhov hnyav, qhia qhov sib txawv tsis tu ncua. Cov neeg tuaj nyob rau hauv tag nrho cov duab thiab ntau thiab tsawg
Puas yog tus nplaig dov txuas ntxiv lossis tsis txuas ntxiv?
Tus nplaig dov yog ib qho piv txwv ntawm kev hloov pauv tsis tu ncua: koj tuaj yeem yob koj tus nplaig lossis koj ua tsis tau. Cov yam ntxwv uas qhia kev hloov pauv tas mus li feem ntau yog tshwm sim los ntawm txoj kev nyuaj, lossis ntau yam, cov qauv ntawm cov qub txeeg qub teg uas muaj ntau yam sib txawv ntawm cov noob thiab cov yam ntxwv hauv ib puag ncig (piv txwv li, kev noj haus)
Puas yog PTC saj dominant lossis recessive?
PTC-tasting muaj peev xwm yog ib qho yooj yim genetic yam ntxwv tswj los ntawm ib khub ntawm alleles, dominant T rau tasting thiab recessive t rau nontasting
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua