Puas yog dov ntawm tus nplaig dominant lossis recessive?
Puas yog dov ntawm tus nplaig dominant lossis recessive?

Video: Puas yog dov ntawm tus nplaig dominant lossis recessive?

Video: Puas yog dov ntawm tus nplaig dominant lossis recessive?
Video: Koj mus ua neej zoo li cas lawm 11/16/2018 2024, Kaum ib hlis
Anonim

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.

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