Video: Dab tsi yog cov kws tshawb fawb taxa siv los faib cov khoom muaj sia?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev tshawb fawb ntawm kev faib cov tsiaj muaj sia hu ua taxonomy. Linnaeus tau qhia txog kev faib cov txheej txheem uas tsim lub hauv paus ntawm kev faib tawm niaj hnub no. Taxa hauv Linnaean system muaj xws li lub nceeg vaj, phylum, chav kawm, kev txiav txim, tsev neeg, genus, thiab hom.
Tom qab ntawd, ib tug kuj yuav nug, cov kws tshawb fawb siv DNA los faib cov kab mob li cas?
Piv txwv li, cov kws tshawb fawb ua tau siv DNA ib ntus los pab txiav txim seb lawv puas tau pom ib hom tshiab. Cov kws tshawb fawb kuj sib piv DNA sequences los ntawm txawv kab mob thiab ntsuas tus naj npawb ntawm cov kev hloov pauv (mutations) ntawm lawv los txiav txim seb hom tsiaj nyob ze lossis nyob deb li cas.
Tsis tas li ntawd, cov kws tshawb fawb tau faib cov khoom li cas? Hauv biology, tag nrho cov kab mob muaj sia nyob cais raws li yim yam sib txawv. Cov no yog: Domain, Kingdom, Phylum, Class, Order, Family, Genus, thiab Hom.
Yog li ntawd, ob qho laj thawj dab tsi uas cov kws tshawb fawb cais cov kab mob uas muaj sia nyob siv kev sau se?
Nyob tej yam uas koom rau hauv tej pawg muaj tej yam zoo sib xws. txawv cov kws tshawb fawb siv ntau yam systems kev faib tawm npaj tag nrho nyob yam rau hauv pab pawg. Zuag qhia tag nrho, yog vim li cas cov kws tshawb fawb cais kev nyob yam yog kom nkag siab txog kev sib raug zoo ntawm kev sib txawv kab mob.
Kev faib tawm yog dab tsi?
A kev faib tawm yog ib tug faib los yog qeb nyob rau hauv ib tug system uas faib tej yam rau hauv pawg los yog hom. Tsoom fwv siv a kev faib tawm system uas muaj xws li haiv neeg thiab haiv neeg.
Pom zoo:
Dab tsi yog ob yam cuab yeej uas cov kws tshawb fawb siv thaum ntxuav cov pob txha?
Yog li cov kws tshawb fawb siv bulldozers los khawb cov pob zeb thiab av. 2. Cov neeg ua hauj lwm ces siv duav, xyaum, rauj, thiab chisels kom cov pob txha tawm hauv av
Cov kws tshawb fawb siv dab tsi los kawm txog huab cua yav dhau los?
Cov lus qhia txog kev nyab xeeb yav dhau los tau muab faus rau hauv cov av hauv qab dej hiav txwv thiab pas dej, kaw cia hauv coral reefs, khov rau hauv cov dej khov thiab cov kaus mom dej khov, thiab khaws cia rau hauv cov rings ntawm cov ntoo kom txuas ntxiv cov ntaub ntawv no, paleoclimatologists nrhiav cov lus qhia hauv ntiaj teb ib puag ncig ntuj. cov ntaub ntawv
Dab tsi yog cov cuab yeej lossis cov ntaub ntawv uas tus Kws Tshawb Fawb xav tau los txheeb xyuas cov ntaub ntawv nug?
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry
Cov txheej txheem dab tsi uas tus kws tshawb fawb siv los tsim ntau cov ntawv luam ntawm DNA xav tau sau rau hauv daim ntawv dawb paug 1?
Molecular Cloning. Cloning tso cai rau tsim ntau cov ntawv luam ntawm cov noob, qhia cov noob, thiab kawm txog cov noob tshwj xeeb. Yuav kom tau txais cov DNA tawg rau hauv cov kab mob hauv cov kab mob hauv daim ntawv uas yuav tau theej lossis nthuav tawm, cov khoom tawg yog thawj zaug tso rau hauv plasmid
Cov yam ntxwv dab tsi uas cov kws tshawb fawb siv los faib cov pob zeb?
Feem ntau cov zaub mov tuaj yeem ua tus cwj pwm thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, strrea Feem ntau cov zaub mov tuaj yeem ua tus yam ntxwv thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, streak, tshwj xeeb gravity, cleavage, tawg, thiab tenacity