2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yuav ua li cas koj yuav kawm ua: Pom tias mutations yog lub hauv paus ntawm microevolution; thiab qhov kev hloov pauv ntawd txhim kho txoj sia nyob thiab kev yug me nyuam ntawm tib neeg hauv cov pej xeem. Peb twb tau kawm txog DNA thiab kev hloov pauv, tam sim no peb yuav kawm txog yuav ua li cas cov kev hloov pauv no tuaj yeem tsav kev hloov pauv.
Kev hloov pauv ua rau microevolution li cas?
Microevolution qhia txog hloov pauv hauv DNA ntu thiab allele zaus hauvib hom nyob rau lub sijhawm. Cov kev hloov pauv no yuav yog vim kev hloov pauv, uas tuaj yeem qhia cov alleles tshiab rau hauv cov pejxeem.
Kev hloov pauv hauv microevolution yog dab tsi?
Mutation: thaum kev hloov pauv tau zoo ntawm tus kheej tshwm sim hauv lub cev, cov noob hloov pauv no tuaj yeem nce ntau zaus ntau tiam neeg yog tias nws nthuav tawm qhov zoo dua rau cov uas tsis muaj nws.
Puas hloov pauv ua rau macroevolution?
Kev hloov pauv uas ua rau muaj hom tshiab yog ib feem ntawm macroevolution. Feem ntau microevolution tuaj yeem ua rau macroevolution vim qhov kev hloov pauv tau tshaj tawm thiab ob hom sib txawv tshwm sim. Ob leeg yog tshwm sim los ntawm mutation, genetic drift, gene flow or natural selection.
Dab tsi ua rau microevolution?
5 ua rau microevolution
- genetic drift - stochastic variation in inheritance.
- Nyob zoo ib tsoom phooj ywg.
- Mutation.
- Natural selection.
- Migration (gene flow)
Pom zoo:
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Puas yog jurassic ntiaj teb hloov pauv hloov pauv hloov pauv?
Qee zaum, paub meej, koj yuav tau rov qab mus rau lub sijhawm dhau los - txuag manually, thiab feem ntau, raws li game's autosave yog… tsis zam txim - tab sis feem ntau ntawm cov lub sijhawm koj tuaj yeem khaws cov khoom thiab khaws cia nrog.
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
Los ntawm kev hloov pauv hloov pauv hloov pauv?
Kev hloov pauv hloov pauv hloov pauv (TMA) yog qhov isothermal (tsis hloov pauv nucleic acid kub), ib leeg-tube nucleic acid amplification system siv ob lub enzymes, RNA polymerase thiab thim rov qab kev sau ntawv. … Cov txheej txheem no tuaj yeem siv los tsom rau RNA thiab DNA.
