Video: Dab tsi yog qhov hloov pauv ntawm cov yoov uas Morgan pom thawj zaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thomas Hunt Morgan , leej twg kawm txiv hmab txiv ntoo yoov , muab cov ua ntej muaj kev pom zoo ntawm chromosome txoj kev xav. Morgan nrhiav tau ib kev hloov pauv uas cuam tshuam ya qhov muag xim. Nws pom tias tus kev hloov pauv tau sib txawv ntawm txiv neej thiab poj niam yoov.
Kuj nug, Morgan nrhiav tau dab tsi?
Thomas Hunt Morgan tau txais txiaj ntsig Nobel Prize hauv Physiology lossis Tshuaj hauv xyoo 1933. Cov haujlwm uas tau muab khoom plig tau ua tiav nyob rau hauv 17-xyoo lub sijhawm ntawm Columbia University, pib xyoo 1910 nrog nws nrhiav pom qhov muag dawb ntawm cov txiv hmab txiv ntoo ya, Drosophila.. Morgan tau txais nws Ph.
Thomas Hunt Morgan nrhiav tau dab tsi txog chromosomes hauv txiv hmab txiv ntoo yoov? Thomas Hunt Morgan , ib tug embryologist uas muaj tig mus rau kev tshawb fawb nyob rau hauv heredity, nyob rau hauv 1907 tau pib mus rau ntau yam sib txawv txiv hmab txiv ntoo ya , Drosophila melanogaster. Raws li nws muab tawm, Morgan tau lees paub Mendelian txoj cai ntawm kev qub txeeg qub teg thiab cov kev xav tias cov noob yog nyob rau ntawm chromosomes.
Kuj tseem paub yog, Thomas Hunt Morgan piav qhia nws qhov kev tshawb pom li cas?
4, 1945, Pasadena, Calif.), American zoologist thiab geneticist, nto moo rau nws kev tshawb fawb nrog cov txiv hmab txiv ntoo yoov (Drosophila) los ntawm qhov uas nws tau tsim cov chromosome txoj kev xav ntawm heredity. Nws tau pom tias cov noob tau txuas rau hauv cov kab ke ntawm chromosomes thiab muaj lub luag haujlwm rau kev txheeb xyuas, keeb kwm ntawm keeb kwm.
Morgan pom dab tsi txawv ntawm nws lub ntsej muag dawb mutant txiv hmab txiv ntoo ya raws li kev sim kev yug me nyuam?
Morgan hypothesized tias, hauv nws txoj kev yug me nyuam , tus thawj tiam ntawm yoov muaj cov txiv neej tsuas yog nrog dawb obey vim tus noob tswj qhov muag xim yog nyob rau tus X chromosome. Txiv neej tso tawm cov dawb qhov muag zoo vim tus qhov zoo muaj nyob rau lawv tsuas yog X chromosome.
Pom zoo:
Dab tsi yog qhov kev hloov pauv hloov pauv?
Kev hloov pauv, hauv molecular biology, yog hais txog kev hloov pauv hauv deoxyribonucleic acid (DNA), qhov twg ib qho (ob lub nplhaib) purine hloov pauv rau (ib lub nplhaib) pyrimidine, los yog vice versa
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Dab tsi yog qhov txawv ntawm ib puag ncig kev hloov pauv thiab kev hloov pauv qub txeeg qub teg?
Qhov sib txawv ntawm cov yam ntxwv ntawm cov tib neeg ntawm tib hom yog hu ua variation. Qhov no yog inherited variation. Qee qhov kev hloov pauv yog qhov tshwm sim ntawm qhov sib txawv ntawm ib puag ncig, lossis ib tus neeg ua dab tsi. Qhov no yog hu ua environmental variation
Dab tsi yog qhov kev hloov pauv ntawm cov khoom uas txav ntawm qhov chaw mus rau qhov chaw ntawm - 12 m?
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Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?
Allele frequencies nyob rau hauv ib tug pej xeem yuav hloov vim plaub lub hauv paus zog ntawm evolution: Natural Selection, Genetic Drift, Mutations thiab Gene Flow. Kev hloov pauv yog qhov kawg ntawm cov alleles tshiab hauv cov noob caj noob ces. Ob ntawm cov txheej txheem tseem ceeb tshaj plaws ntawm kev hloov pauv hloov pauv yog: Natural Selection thiab Genetic Drift