Video: Dab tsi yog 2 hom kev hloov pauv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hom Kev hloov pauv
Kev hloov pauv 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
Tsuas yog li ntawd, dab tsi yog variation thiab nws hom?
Hom ntawm variation Variation tuaj yeem yog txuas ntxiv lossis tsis txuas ntxiv. Tsis tu ncua kev hloov pauv piav kev hloov pauv nyob rau hauv uas sib txawv alleles ntawm ib tug noob muaj ib tug loj ntxim rau lub phenotype ntawm lub cev. Tsis tu ncua kev hloov pauv piav kev hloov pauv nyob rau hauv uas ntau alleles muaj me me los ntawm phenotype.
Tsis tas li, qhov piv txwv ntawm kev hloov pauv yog dab tsi? Piv txwv ntawm caj ces kev hloov pauv suav nrog qhov muag xim, hom ntshav, camouflage nyob rau hauv cov tsiaj, thiab nplooj hloov pauv hauv cov nroj tsuag.
Kuj paub, muaj pes tsawg hom variation muaj?
kev hloov pauv tej zaum yuav raug txhais raws li qhov sib txawv ntawm tus neeg ntawm tib hom. Intra tshwj xeeb kev hloov pauv ntawm cov txawv genera. Lawv muaj ob hom somatic kev hloov pauv thiab germinal kev hloov pauv.
Dab tsi yog variations li cas lawv pab tau?
Kev hloov pauv yog muaj txiaj ntsig rau kev ciaj sia ntawm hom tshaj li cov tib neeg. Raws li ib puag ncig tej yam kev mob yog hloov drastic e.g. Yog hais tias qhov kub ntawm cov dej nce dheev, ces feem ntau ntawm cov kab mob nyob hauv dej yuav tuag.
Pom zoo:
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
Vim li cas tom qab kev hloov pauv kev hloov pauv tseem ceeb?
Kev hloov pauv tom qab kev txhais lus (PTMs) xws li glycosylation thiab phosphorylation ua lub luag haujlwm tseem ceeb ntawm kev ua haujlwm ntawm hemostatic proteins thiab tseem ceeb heev hauv kev teeb tsa kab mob. Xws li theem nrab hloov pauv rau cov proteins hemostatic muaj ntau yam cuam tshuam rau lawv lub peev xwm los cuam tshuam nrog lwm cov proteins
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 tsim cov roj siab thiab nws hloov pauv li cas nrog kev hloov pauv hauv kinetic zog?
Gas siab yog tshwm sim los ntawm kev sib tsoo ntawm cov khoom siv roj nrog rau sab hauv ntawm lub thawv thaum lawv sib tsoo nrog thiab tawm dag zog rau ntawm phab ntsa ntim. Tom qab ntawd cov roj yog cua sov. Raws li qhov kub ntawm cov roj nce, cov khoom tau nce lub zog kinetic thiab lawv cov nrawm nrawm
Peb qhov laj thawj tseem ceeb ntawm kev hloov pauv hloov pauv yog dab tsi?
Allele frequencies nyob rau hauv ib tug pej xeem yuav hloov vim plaub lub hauv paus zog ntawm evolution: Natural Selection, Genetic Drift, Mutations thiab Gene Flow. Kev hloov pauv yog qhov kawg ntawm cov alleles tshiab hauv cov noob caj noob ces. Ob ntawm cov txheej txheem tseem ceeb tshaj plaws ntawm kev hloov pauv hloov pauv yog: Natural Selection thiab Genetic Drift