Txiv Neej Variation vs Genetic Diversity
Kev hloov pauv caj ces thiab kev sib txawv ntawm caj ces yog cov ntsiab lus uas nyob ze rau ib leeg nrog qee qhov sib txawv me ntsis nthuav tawm ntawm cov. Genetic variation lays the foundation for organisms to have genetic diversity, uas pab txhawb rau biodiversity los ntawm ntau haiv neeg. Ntau yam thiab sib txawv sib sau ua ke rau ntau haiv neeg; Yog li ntawd, qhov muaj qhov sib txawv thiab muaj ntau haiv neeg hauv cov khoom siv caj ces yeej pab tau cov tsiaj kom vam meej los ntawm kev hloov pauv tau ntxiv rau qhov hloov pauv ib puag ncig.
Kev hloov pauv caj ces yog dab tsi?
Kev hloov pauv caj ces tsuas yog qhov hloov pauv ntawm cov noob caj noob ces hauv cov noob caj noob ces ntawm ib hom lossis cov pejxeem. Nws tuaj yeem piav qhia tias yog txheej txheem lossis txheej txheej txheej txheem uas tuaj yeem tshwm sim hauv lossis ntawm cov pejxeem. Genetic variations muab raw cov ntaub ntawv rau lub ntuj xaiv. Kev hloov pauv thiab kev yug me nyuam ntawm kev sib deev yog qhov laj thawj tseem ceeb rau kev hloov caj ces. Thaum ib qho allele hloov vim muaj kev hloov pauv, cov tiam tom ntej yuav muaj cov noob sib txawv hauv lawv cov pejxeem. Kev hloov pauv ntawm ib qho allele tuaj yeem tshwm sim vim kev hloov pauv hauv cov noob lossis hauv chromosome.
Kev hloov caj ces kuj tuaj yeem tshwm sim vim yog kev sib deev ntawm kev sib deev los ntawm kev xaiv poj niam thiab muaj peev xwm rov ua dua. Vim muaj qhov sib txawv ntawm cov tib neeg hauv cov pej xeem, qhov kev nyiam yog tsim los ntawm kev xaiv cov neeg koom nrog kev sib tw, thaum meiosis kauj ruam tau tshwm sim thaum lub sij hawm gamete. Yog li ntawd, yuav muaj qhov ua tau zoo rau cov alleles hloov pauv hauv cov neeg tom ntej. Txawm hais tias qhov hloov pauv tsis yog ib txwm hais tawm vim qhov tshwm sim tsis zoo thiab tseem ceeb ntawm allele, qhov kev hloov pauv tshwm sim yuav muaj kev cuam tshuam yav tom ntej. Cov kev hloov pauv no yuav yog qhov tseem ceeb los hloov kho qhov xav tau ntawm qhov hloov pauv ib puag ncig lossis pab kom muaj sia nyob ntawm kev xaiv ntuj.
Dab tsi yog Genetic Diversity?
Kev sib txawv ntawm caj ces tuaj yeem txhais tau tias yog qhov sib txawv hauv thiab ntawm cov tsiaj hauv daim ntawv ntawm kev tsim caj ces. Muaj ob lub ntsiab lus tseem ceeb kom nkag siab txog lub ntsiab lus; ib qho yog tias nws cuam tshuam nrog cov khoom siv caj ces, thiab lwm qhov yog tias nws tuaj yeem cuam tshuam nrog ib hom lossis ntau tshaj qhov ntawd. Genetic diversity yog suav tias yog theem pib ntawm biodiversity.
Kev sib txawv yog qhov sib xyaw ua ke ntawm ntau yam thiab sib txawv; Cov noob caj noob ces ua haujlwm rau txhua hom kom hloov tau rau qhov nyuaj ib puag ncig xav tau. Lub peev xwm rau ib hom kev hloov pauv yog qhov tseem ceeb tshaj qhov kev xav tau sib txawv ntawm ib puag ncig; qhov tseeb, ib puag ncig ib txwm hloov pauv raws sijhawm. Cov dinosaurs tsis tuaj yeem sawv ntsug raws li qhov xav tau tom qab lub meteorite tau tsoo lub ntiaj teb, thiab tau ploj mus. Yog tias muaj ntau hom caj ces txaus thiab lub sijhawm hloov mus rau cov xwm txheej zoo li cov tsiaj txhu tau ua, dinosaurs tseem yuav nyob hauv lub ntiaj teb no. Tsis muaj kev sib txawv ntawm caj ces yog ib qho teeb meem loj rau cheetahs kom muaj nyob ntev; lawv, qhov tseeb, yog genetic bottlenecked. Lub xub ntiag ntawm ntau hom caj ces txhais tau hais tias nws yog cov neeg muaj ntau yam.
Qhov txawv ntawm Genetic Variation thiab Genetic Diversity yog dab tsi?
• Genetic variation deals with individuals of a particular species, whereas genetic diversity can be related to ib los yog ntau hom.
• Kev hloov pauv caj ces feem ntau tshwm sim vim kev sib deev thiab kev hloov pauv, thaum kev sib txawv ntawm caj ces ua qhov tseem ceeb rau qhov xav tau ntawm xwm.
• Genetic variation muab cov ntaub ntawv kab rau kev xaiv ntuj thaum muaj ntau haiv neeg yog lub hauv paus ntawm biodiversity.
• Kev sib txawv ntawm caj ces tuaj yeem ntsuas tau los ntawm kev suav cov noob sib txawv hauv cov noob caj noob ces, tab sis kev hloov caj ces tsuas tuaj yeem tshwm sim thiab ntsuas tsis tau.
