Video: Dab tsi yog qhov cuam tshuam rau kev hloov pauv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntau yam tuaj yeem ua rau muaj kev sib txawv ntawm kev loj hlob thoob plaws thiab ntawm cov pejxeem xws li yam tseem ceeb ntawm caj ces , khoom noj khoom haus, ib puag ncig tej yam kev mob, kev sib raug zoo tej yam kev mob, thiab kab lis kev cai tej yam kev mob. Genetic Factors : Genotype tuaj yeem muaj txiaj ntsig zoo rau kev loj hlob raws li qhia hauv ob qho piv txwv tom ntej.
Kuj nug, dab tsi yog qhov ua rau muaj kev hloov pauv?
Major ua rau ntawm kev hloov pauv muaj xws li kev hloov pauv, noob ntws, thiab kev sib deev. DNA mutation ua rau caj ces kev hloov pauv los ntawm kev hloov cov noob ntawm tib neeg hauv cov neeg. Gene flow ua rau muaj caj ces kev hloov pauv raws li cov neeg tshiab nrog cov noob sib txawv sib txawv txav mus rau hauv cov pej xeem.
Tsis tas li ntawd, 2 hom kev hloov pauv yog dab tsi? Hom Variation Variation nyob rau hauv ib hom yog tsis tshua muaj, tab sis yeej muaj ob hom loj ntawm kev hloov pauv nyob rau hauv ib hom: nruam kev hloov pauv thiab tsis txuas ntxiv kev hloov pauv . Tsis tu ncua kev hloov pauv yog qhov txawv hom kev hloov pauv muab faib rau ntawm qhov txuas ntxiv.
Kuj tseem yuav paub, dab tsi yog yam uas cuam tshuam txog kev hloov caj ces?
Genetic variation tuaj yeem tshwm sim los ntawm kev hloov pauv (uas tuaj yeem tsim cov alleles tshiab hauv cov pejxeem), random mating, random fertilization, thiab recombination ntawm homologous chromosomes thaum lub sij hawm meiosis (uas reshuffles alleles nyob rau hauv lub cev xeeb tub).
Kev hloov pauv hauv evolution yog dab tsi?
Kev hloov pauv , hauv biology, txhua qhov sib txawv ntawm cov hlwb, cov kab mob ntawm tus kheej, lossis pab pawg ntawm cov kab mob ntawm ib hom kab mob tshwm sim los ntawm kev sib txawv ntawm caj ces (genotypic kev hloov pauv ) lossis los ntawm kev cuam tshuam ntawm ib puag ncig yam ntawm qhov kev qhia ntawm cov caj ces muaj peev xwm (phenotypic kev hloov pauv ).
Pom zoo:
Dab tsi yog qhov sib txawv ntawm cov rog yuav cuam tshuam rau kev sib cuam tshuam ntawm cov dej molecules?
1 Teb. Qhov tseeb, dej muaj tag nrho peb hom kev sib xyaw ua ke, nrog qhov muaj zog tshaj plaws yog hydrogen bonding. Txhua yam muaj London dispersion yuam cov kev sib cuam tshuam tsis muaj zog yog ib ntus dipoles uas tsim los ntawm kev hloov ntawm electrons nyob rau hauv ib lub molecule
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 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 txawv ntawm kev cuam tshuam kev cuam tshuam thiab kev cuam tshuam cuam tshuam?
Paub qhov txawv ntawm kev cuam tshuam kev tsim kho thiab kev cuam tshuam puas tsuaj. Kev tsim kev cuam tshuam tshwm sim thaum lub crests ntawm ob nthwv dej ntxiv ua ke. Kev cuam tshuam kev puas tsuaj tshwm sim thaum lub crest ntawm ib yoj raug txo los ntawm lub trough ntawm lwm tus
Dab tsi yog qee qhov piv txwv ntawm kev cuam tshuam tsis zoo ntawm tib neeg ib puag ncig kev cuam tshuam?
Kev ua liaj ua teb tuaj yeem cuam tshuam tsis zoo rau peb ib puag ncig, suav nrog kev poob ntawm biodiversity, dej paug, kev hloov pauv huab cua, av yaig thiab muaj kuab paug