2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Chromosomal deletions tshwm sim spontaneously ntawm ib tug tsawg zaus, los yog induced los ntawm kev kho cov kab mob hlwb (feem ntau zoo, laus los yog maturing oocytes nyob rau hauv cov poj niam, thiab postmeiotic spermatogenic hlwb nyob rau hauv lub txiv neej) nrog chromosome-breaking agents, xws li mob hluav taws xob los yog tej yam tshuaj.
Dab tsi ua rau kev hloov pauv hloov?
Ib deletion mutation tshwm sim thaum ib daim ntawv wrinkle ntawm DNA template strand thiab tom qab ntawd ua rau ib tug nucleotide raug tshem tawm ntawm replicated strand(Daim duab 3). Daim duab 3: Hauv kev hloov pauv hloov pauv, cov ntaub ntawv wrinkle ntawm DNA qauv strand, uas ua rau cov nucleotide raug tshem tawm los ntawm cov kab rov ua dua.
Dab tsi ua rau chromosome duplication?
Thaum tus mob tshwm sim tsis tu ncua, nws tshwm sim los ntawm ib qho yuam kev thaum lub sijhawm tsim cov qe lossis cov phev cell, lossis thaum ntxov tom qab fertilization. Qhov duplication tshwm sim thaum ib feem ntawm chromosome 1 tau theej (duplicated) txawv txav, uas ua rau cov khoom siv caj ces ntxiv los ntawm ntu duplicated.
Vim li cas cov kab mob chromosomal tshwm sim?
Qee chromosomal mob tshwm sim los ntawm hloov pauv ntawm cov chromosomes. Cov kev hloov no tsis tau txais txiaj ntsig, tab sis tshwm sim raws li cov xwm txheej tshwm sim thaum lub sij hawm tsim cov qe qe thiab cov phev. Ib qho yuam kev hauv kev faib cell hu ua nondisjunction ua rau cov qe menyuam yaus nrog tus lej txawv txav.chromosomes.
Cov kab mob chromosomal puas kho tau?
Tsis muaj kev kho rau chromosomal disorders. Cov kab mob chromosomal cuam tshuam rau tus neeg lub caj ces pleev. Vim tias lawv yeej tsim kev hloov pauv hauv tib neeg DNA, tsis muaj txoj hauv kev los kho cov kab mob no nyob rau lub sijhawm no.
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.
