2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev hloov pauv caj ces tuaj yeem tshwm sim los ntawm mutation (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).
Yuav ua li cas 3 qhov kev hloov pauv?
Rau cov neeg muab, muaj peb qhov kev hloov pauv: mutation, recombination, thiab kev nkag tebchaws ntawm cov noob.
Kev hloov caj ces yog dab tsi thiab nws tshwm sim los ntawm qhov twg?
Kev hloov pauv, kev hloov pauv hauv cov kab ke ntawm cov noob hauv DNA, yog ib qho ntawm kev hloov pauv caj ces. Lwm qhov chaw yog gene flow, los yog kev txav ntawm cov noob ntawm ntau pawg ntawm cov kab mob. Thaum kawg, kev hloov pauv ntawm caj ces tuaj yeem tshwm sim los ntawm kev sib deev, uas ua rau muaj kev tsim cov kev sib txuas tshiab ntawm cov noob.
Puas genetic variation zoo los phem?
Kev hloov pauv caj ces yog zoo rau cov pej xeemvim nws ua rau qee tus neeg hloov mus rau ib puag ncig thaum tswj kev ciaj sia ntawm cov pejxeem.
Kev hloov caj ces hauv ib tus neeg tshwm sim li cas?
Kev hloov pauv caj ces tuaj yeem tshwm sim los ntawm cov noob sib txawv (tseem hu ua kev hloov pauv) lossis los ntawm cov txheej txheem ib txwm muaj uas cov khoom siv caj ces raug rov kho dua li lub xovtooj tau npaj los faib (paub tias yog caj ces. recombination). Genetic variations uas hloov cov kev ua ntawm noob caj noob ces los yog protein muaj nuj nqi tuaj yeem qhia cov yam ntxwv sib txawv hauv ib qhokab mob.
Pom zoo:
Puas yog rov tshwm sim dua lossis rov tshwm sim dua?
Reoccur thiab recur yog verbs uas qhia ib lo lus hauv paus. Thaum lawv nyob ze heev ntawm lub ntsiab lus, lawv tsis zoo ib yam. Tej yam uas yog rov tshwm sim dua thiab dhau mus, tej zaum nyob rau ib ntus. Hauv qhov sib piv, ib yam dab tsi uas rov tshwm sim tsuas yog tshwm sim dua tab sis tsis tas yuav rov ua dua.
Rau qhov tshwm sim tshwm sim?
Cov tshuaj tiv thaiv tus kheej yogtawm tsam uas nyiam tsim cov khoom ntawm cov xwm txheej uas tshwm sim. … Qhov kev sib xyaw ua ke ntawm kev txo qis ntawm lub zog thiab qhov nce hauv entropy txhais tau hais tias cov tshuaj tiv thaiv combustion tshwm sim tsis tu ncua.
Thaum twg pfizer tshwm sim tshwm sim?
Qee yam tshwm sim tshwm sim txoj cai tom qab koj txhaj tshuaj, zoo li mob me me hauv koj txhais caj npab. Lwm tus yuav siv sij hawm ntau teev los txhim kho. Nco ntsoov tias nrog ob koob tshuaj tiv thaiv zoo li Pfizer-BioNTech thiab Moderna, koj tuaj yeem pom muaj kev phiv ntau dua tom qab txhaj tshuaj thib ob.
Yuav tshwm sim lossis tshwm sim?
Peb hom tshwm sim yog arise, sawv, arisen. Nws yog siv hauv cov ntsiab lus tseem ceeb: Ib lub sijhawm tshwm sim thiab nws txiav txim siab los ua txoj haujlwm hauv Brussels. Ib qho teeb meem tshwm sim nrog kuv daim ntawv hla tebchaws. Thaum siv tshwm sim lossis tshwm sim?
Yuav ua li cas txiav txim siab seb qhov kev tshwm sim yog tshwm sim los yog tsis ua raws li txoj cai?
Kev sib xyaw ua lej ntawm kev hloov pauv enthalpy thiab hloov pauv hloov pauv tso cai rau kev hloov pauv ntawm lub zog dawb los suav. A tawm tsam nrog tus nqi tsis zoo rau ΔG tso tawm lub zog dawb thiab yog li nws tus kheej. Cov tshuaj tiv thaiv nrog qhov zoo ΔG yog tsis ua raws li kev xav thiab yuav tsis nyiam cov khoom.
