Video: Dab tsi yog qhov kev hloov pauv hloov pauv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hloov pauv , nyob rau hauv molecular biology, hais txog ib lub ntsiab lus kev hloov pauv nyob rau hauv deoxyribonucleic acid (DNA), qhov twg ib leeg (ob lub nplhaib) purine hloov rau ib (ib lub nplhaib) pyrimidine, los yog vice versa.
Ib yam li ib tug yuav nug, dab tsi yog qhov kev hloov pauv hloov pauv?
Kev hloov pauv hloov yog ib hom ntsiab lus tshwj xeeb kev hloov pauv , ib qho uas ib zaug purine hloov pauv rau pyrimidine lossis vice versa. Raws li qhov tshwm sim ntawm a kev hloov pauv hloov , cov hloov pauv Piv txwv li, txoj hauj lwm hauv cov noob yuav muaj ib qho adenine uas nws muaj thymine lossis cytosine.
Dab tsi yog qhov txawv ntawm kev hloov pauv hloov pauv thiab kev hloov pauv hloov pauv? Kev hloov pauv yog kev hloov pauv ntawm ob lub nplhaib purines (A G) lossis ntawm ib lub nplhaib pyrimidines (C T): lawv yog li koom nrog cov hauv paus ntawm cov duab zoo sib xws. Kev hloov pauv yog kev hloov pauv ntawm purine rau pyrimidine hauv paus, uas yog li kev sib pauv ntawm ib lub nplhaib thiab ob lub nplhaib.
Hauv qhov no, qhov twg yog qhov piv txwv ntawm kev hloov pauv hloov pauv?
Hloov pauv kev hloov pauv yog hais txog ib qho purine hloov los ntawm pyrimidine, los yog vice versa; rau piv txwv , cytosine, pyrimidine, yog hloov los ntawm adenine, purine. Kev hloov pauv tuaj yeem yog qhov tshwm sim ntawm qhov sib ntxiv ntawm lub hauv paus, hu ua kev ntxig, lossis tshem tawm ntawm lub hauv paus, tseem hu ua deletion.
Dab tsi ua rau kev hloov pauv hloov pauv?
Kwv yees li ob ntawm peb ib leeg nucleotide polymorphisms (SNPs) yog kev hloov pauv . Kev hloov pauv tuaj yeem yog ua rau los ntawm oxidative deamination thiab tautomerization.
Pom zoo:
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 kev hloov pauv ntawm cov khoom uas txav ntawm qhov chaw mus rau qhov chaw ntawm - 12 m?
Kev piav qhia: Qhov kev txav ntawm ib qho khoom txav ntawm qhov chaw mus rau qhov chaw ntawm − 12 m yog 12 meters. Qhov kev ncua deb ntawm lub hauv paus chiv keeb mus rau qhov siab tshaj plaws txoj hauj lwm yog hu ua displacement ntawm ib yam khoom. Qhov siab tshaj plaws kev hloov pauv ntawm cov khoom nyob rau hauv ib nthwv dej yog hu ua crest thiab qhov tsawg kawg nkaus hloov pauv yog hu ua trough
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
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
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