2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Genetics yog kev tshawb fawb txog cov noob thiab noob caj noob ces-ntawm qhov zoo lossis qhov zoo li cas tau dhau los ntawm niam txiv mus rau cov xeeb ntxwv vim qhov hloov pauv hauv DNA ib ntus. … Txhua yam ntawm cov kab mob caj ces, nrog rau nws cov noob caj noob ces thiab lwm yam khoom uas tswj cov kev ua ntawm cov noob, yog nws cov genome.
Yim hu ua noob caj noob ces?
Genetics yog ceg ntawm biology cuam tshuam nrog kev kawm txog DNA ntawm cov kab mob, lawv cov DNA tshwm sim li cas, thiab cov noob li cas tau txais los ntawm cov xeeb ntxwv.
Dab tsi yog qhov tseem ceeb ntawm kev kawm txog noob caj noob ces?
Tej zaum qhov tseem ceeb tshaj plaws yog kev tshawb fawb rau kev tshawb fawb. Peb kawm txog noob caj noob ces vim qhov DNA ib ntus yog qhov pib, lub hom phiaj rau peb txoj kev loj hlob thiab ntau yam uas ua rau peb tus kheej peb yog. … Peb paub tias qhov sib txawv ntawm caj ces yog ib qho kev hloov pauv ntawm cov me nyuam qhov tshwm sim.
Vim li cas cov tub ntxhais kawm biology yuav tsum kawm noob caj noob ces?
Kev noob caj noob ces yog qhov tseem ceeb rau kev nkag siab txhua yam ntawm biology, thiab daim teb no tau tsav ntau yam kev nce qib niaj hnub hauv tshuaj, kev ua liaj ua teb, thiab kev lag luam tshuaj. … Tsis tas li ntawd, kev kho cov noob uas hloov cov noob tsis zoo nrog cov ntawv luam tsis zoo tau dhau los ua qhov tseeb kho mob.
3 yam loj ntawm noob caj noob ces yog dab tsi?
Kev faib ntawm Cov Kev Cai Lij Choj Ib txwm, txoj kev tshawb fawb ntawm noob caj noob ces tau muab faib ua peb yam tseem ceeb:kis cov noob caj noob ces, cov noob caj noob ces molecular, thiab cov noob caj noob ces. Kev xa cov noob caj noob ces suav nrog cov hauv paus ntsiab lus ntawm cov noob caj noob ces thiab yuav ua li cas cov txiaj ntsig tau dhau los ntawm ib tiam mus rau lwm tiam.
Pom zoo:
Pob noob noob noob noob nom noob tswv los?
Cov noob noob hnav tuaj yeem tshwm sim hauv Asia lossis East Africa, thiab cov neeg Iyiv thaum ub tau paub tias tau siv cov noob hauv av ua hmoov nplej. Cov noob tau siv los ntawm Suav tsawg kawg yog 5,000 xyoo dhau los, thiab ntau pua xyoo lawv tau hlawv cov roj los ua cov tshuaj tsw qab rau cov ntawv suav zoo tshaj plaws.
Nyob rau hauv noob caj noob ces yog dab tsi genotype ntawm hh txhais tau tias?
Lub hauv paus ntawm lo lus no txhais tau tias "tseem" thiab lawv yog tib yam. HH yog ob lub peev thiab hh yog ob qho tib si qis. HH yog homozygous dominant, vim yog lub peev. HH homozygous recessive? Ib lub taub hau tag nrho cov plaub hau yog qhov tseem ceeb, nrog rau homozygous gene ntawm HH.
Puas muaj cov ntawv tshaj tawm ntawm cov noob caj noob ces?
Muaj cov ntawv hauv Chivkeeb koj tuaj yeem tswj tautab sis koj tsis tso cai caij lawv. Koj puas tuaj yeem siv daim ntawv tshaj tawm ntawm Chiv Keeb 2? Qhov no sleek, hi-tek exo-cov armor yuav tsum tiv thaiv koj nyob rau hauv ntau yam xwm txheej uas ua rau tuag taus - thiab qhov zoo tshaj plaws, ntawm Chiv Keeb Tshooj 2, cov khaub ncaws no muaj qhov txwv tsis pub dav hlau dav hlau tsis tas yuav tsum muaj Element - thiab Cov ntawv tshaj tawm kuj tau txais kev txhawb siab
Nyob hauv lub ntsiab txhais ntawm noob caj noob ces?
Ib tug tseem ceeb, lossis ib qho tseem ceeb ntawm cov noob, yog ib qho txawv ntawm cov noob, uas rau ntau yam laj thawj, nthuav tawm nws tus kheej ntau dua los ntawm nws tus kheej dua li lwm yam ntawm cov noob uas tus neeg nqa tau, thiab, qhov no, tus recessive.
Dab tsi yog kev nkag mus rau hauv noob caj noob ces?
Penetrance hauv noob caj noob ces yog qhov kev faib ua feem ntawm cov tib neeg uas muaj qhov txawv txav ntawm cov noob uas tseem qhia txog qhov cuam tshuam. txhais li cas los ntawm caj ces penetrance? Penetrance ntsuas qhov feem ntawm cov tib neeg hauv cov pej xeem uas muaj cov noob tshwj xeeb thiab qhia txog qhov muaj feem cuam tshuam.
