Video: Dab tsi ua rau tsis sib xws hla dhau quizlet?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib qho chromosome abnormality ua rau los ntawm rearrangement ntawm qhov chaw ntawm nonhomologous chromosomes. Lawv tuaj yeem sib npaug lossis tsis sib npaug. Nws yog qhov opposite ntawm ib tug deletion thiab kuj tshwm sim los ntawm ib qho kev tshwm sim termed kev hla tsis sib xws - dhau uas tshwm sim thaum meiosis ntawm misaligned homologous chromosomes.
Kuj tseem paub yog, dab tsi ua rau tsis sib xws hla?
Kev hla tsis sib xws yog hom kev sib tw ntawm cov noob caj noob ces lossis tshem tawm cov xwm txheej uas tshem tawm ib ntu hauv ib txoj hlua thiab hloov nws nrog kev sib tw ntawm nws tus viv ncaus chromatid hauv mitosis lossis los ntawm nws cov chromosome homologous thaum lub sij hawm meiosis. Feem ntau cov noob yog lub luag haujlwm rau qhov tshwm sim ntawm hla dhau.
Ib yam li ntawd, qhov teeb meem twg tsis cuam tshuam nrog chromosome disorder? Nqe lus piav qhia: Turner Syndrome (TS) tshwm sim thaum ib qho ntawm ob X chromosomes hauv cov poj niam tsis muaj lossis tsis tiav. Cov tsos mob feem ntau yog luv stature thiab gonadal dysgenesis , uas tuaj yeem ua rau muaj kev sib deev tsis tiav thiab zes qe menyuam tsis ua haujlwm thiab muaj menyuam tsis taus.
Yog li ntawd, dab tsi yog qhov kev sib tw tsis sib haum xeeb thiab nws tuaj yeem ua rau dab tsi?
nonreciprocal crossover . thaum homologous chromosomes tawg thiab rov tuaj rau ntawm qhov chaw tsis raug thaum hla dhau, yog li ntawd ib chromatid poob ntau cov noob dua li nws tau txais. Cov txiaj ntsig hauv 1 chromosome nrog deletion thiab 1 chromosome nrog duplication. gamete. ib tug haploid reproductive cell, xws li qe los yog phev.
Lub sij hawm hla dhau yog dab tsi?
Chromosomal crossover, los yog hla dhau , yog kev sib pauv ntawm cov khoom siv caj ces ntawm ob homologous chromosomes non-viv ncaus chromatids uas ua rau cov chromosomes recombinant thaum sib deev.
Pom zoo:
Puas yog ob txoj kab sib luag zoo sib xws lossis tsis sib xws?
Yog tias ob qhov sib npaug piav txog kab sib luag, thiab yog li cov kab uas tsis sib tshuam, qhov system yog ywj siab thiab tsis sib haum. Yog hais tias ob qhov sib npaug piav txog tib kab, thiab yog li cov kab uas hla tus lej tsis kawg, lub kaw lus yog nyob ntawm thiab sib xws
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
Dab tsi yog qhov sib npaug hauv kev ua lej tsis sib xws?
Hauv kev ua lej, qhov sib npaug sib npaug yog qhov kev sib raug zoo binary uas yog reflexive, symmetrical thiab transitive. Qhov kev sib raug zoo 'yog sib npaug' yog qhov piv txwv ntawm kev sib npaug ntawm qhov sib npaug, qhov twg rau cov khoom a, b, thiab c: a = a (reflexive property), yog a = b thiab b = c ces a = c (cov cuab yeej hloov pauv. )
Dab tsi yog qhov sib txawv ntawm kev sib tw thiab cov lej sib xws?
Peb siv cov lej sib xws los ua kom qhov teeb meem yooj yim dua los daws hauv peb lub taub hau los ntawm kev hloov txhua tus lej mus rau qhov ze tshaj kaum, nees nkaum, tsib caug lossis puas. Tab sis yog tias peb ua cov lej sib xws thiab sib npaug mus rau qhov ze tshaj plaws puas lossis kaum qhov chaw, 300 thiab 350 yog qhov yooj yim dua los suav hauv peb lub taub hau
Vim li cas koj tig lub cim tsis sib xws thaum koj sib npaug lossis faib los ntawm qhov tsis zoo?
Thaum koj muab ob sab los ntawm tus nqi tsis zoo koj ua rau sab uas ntau dua muaj 'loj' tus lej tsis zoo, uas txhais tau tias tam sim no tsawg dua lwm sab! Qhov no yog vim li cas koj yuav tsum tig lub cim thaum twg koj muab los ntawm tus lej tsis zoo