Video: Yuav ua li cas hloov mus rau evolution?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A kev hloov pauv yog qhov hloov pauv hauv DNA, cov khoom siv ntawm lub neej. Lub cev DNA cuam tshuam nws zoo li cas, nws coj li cas, thiab nws lub cev. Yog li kev hloov pauv hauv lub cev DNA tuaj yeem ua tau ua rau hloov hauv txhua yam ntawm nws lub neej. Kev hloov pauv yog qhov tseem ceeb rau evolution ; lawv yog cov khoom siv ntawm kev hloov pauv caj ces.
Ua li no, vim li cas kev hloov pauv tseem ceeb hauv evolution?
Kev hloov pauv yog qhov tseem ceeb rau evolution tshwm sim vim lawv nce caj ces txawv thiab muaj peev xwm rau tib neeg sib txawv. Feem ntau ntawm kev hloov pauv yog nruab nrab hauv lawv cov teebmeem ntawm cov kab mob uas lawv tshwm sim.
Tsis tas li ntawd, qhov kev hloov pauv twg muaj txiaj ntsig zoo rau evolution? Cov no kev hloov pauv tau zoo suav nrog tej yam xws li lactose kam rau ua, nplua nuj xim tsis pom kev thiab, nyob rau hauv ib co, tiv thaiv kab mob HIV. Kev hloov pauv tau zoo tuaj yeem muab qhov txiaj ntsig zoo rau lub cev muaj lawv thiab, dhau sijhawm, cov no kev hloov pauv tuaj yeem kis tau thoob plaws ib tus neeg.
Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas gene ntws mus rau evolution?
Evolution kuj tuaj yeem tshwm sim los ntawm noob raug xa los ntawm ib haiv neeg mus rau lwm tus. Qhov no gene ntws tshwm sim thaum muaj kev tsiv teb tsaws chaw. Kev poob lossis ntxiv ntawm tib neeg tuaj yeem hloov tau yooj yim noob pas dej frequencies txawm tias tsis muaj lwm yam evolutionary mechanisms ua haujlwm.
Ib qho piv txwv ntawm kev hloov pauv hauv evolution yog dab tsi?
Cov classic piv txwv ntawm evolutionary Kev hloov pauv hauv tib neeg yog hemoglobin kev hloov pauv hu ua HbS uas ua rau cov qe ntshav liab coj mus rau qhov nkhaus, mob zoo li lub cev. Nrog rau ib daim ntawv luam, nws muab kev tiv thaiv rau malaria, tab sis nrog ob daim ntawv luam, nws ua rau muaj mob ntawm mob khaub thuas-cell anemia. Qhov no tsis yog hais txog qhov ntawd kev hloov pauv.
Pom zoo:
Yuav ua li cas koj hloov tus qauv vertex mus rau factored daim ntawv?
Hloov ntawm Cov Ntawv Sib Txawv ntawm Quadratic - Expii. Standard form yog ax^2 + bx + c. Vertex daim ntawv yog a(x-h)^2 + k, uas qhia cov vertex thiab axis ntawm symmetry. Factored daim ntawv yog a(x-r)(x-s), uas nthuav tawm cov hauv paus hniav
Yuav ua li cas cov tsiaj hloov mus rau savanna?
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Lub zog rau kev thauj mus los ntawm qhov twg thiab vim li cas thiaj li xav tau lub zog rau kev thauj mus los?
Kev thauj mus los nquag yog txheej txheem uas yuav tsum tau txav cov molecules tawm tsam qhov concentration gradient. Cov txheej txheem yuav tsum muaj zog. Lub zog rau cov txheej txheem tau txais los ntawm kev rhuav tshem cov piam thaj siv oxygen hauv kev ua pa aerobic. ATP yog tsim thaum ua pa thiab tso tawm lub zog rau kev thauj mus los