Video: Dab tsi yog chromosomal translocation ua rau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv cov noob caj noob ces, chromosome translocation yog ib tug phenomenon uas tshwm sim nyob rau hauv txawv txawv rearrangement ntawm chromosomes . Reciprocal translocation yog a chromosome kev txawv txav ua rau los ntawm kev sib pauv ntawm qhov nruab nrab ntawm cov uas tsis yog homologous chromosomes . Ob qhov sib cais ntawm ob qhov sib txawv chromosomes yog hloov.
Tom qab ntawd, txoj kev hloov mus ua rau mob qog noj ntshav li cas?
Hloov chaw yog ib hom kev raug mob caj dab uas tej zaum yuav ua rau lwm yam gene los ua ib tug mob qog noj ntshav - ua rau gene. Nws xav tias kev hloov chaw tuaj yeem ua haujlwm los ntawm kev tig oncogenes ( mob qog noj ntshav -ua rau cov noob caj noob ces, los yog los ntawm kev xa cov qog suppressor noob mus rau qhov chaw tawm.
Ib tug kuj yuav nug, translocation chromosomal mutation yog dab tsi? Hloov chaw yog hom chromosomal abnormality uas a chromosome so thiab ib feem ntawm nws reattaches rau qhov sib txawv chromosome . Kev hloov pauv ntawm chromosomal tuaj yeem kuaj pom los ntawm kev txheeb xyuas karyotypes ntawm cov hlwb cuam tshuam.
Tsis tas li ntawd, qhov piv txwv ntawm kev hloov pauv yog dab tsi?
Lub sij hawm kev hloov chaw yog siv thaum qhov chaw ntawm cov khoom siv chromosome hloov. Muaj ob hom tseem ceeb ntawm kev hloov chaw : Reciprocal thiab Robertsonian. Qhov tshiab chromosome no hu ua kev hloov chaw chromosome. Cov kev hloov chaw hauv qhov no piv txwv yog nyob nruab nrab ntawm chromosomes 14 thiab 21.
Translocation tshwm sim qhov twg?
Kev hloov pauv tshwm sim Thaum cov chromosomes tawg thaum lub sij hawm meiosis thiab cov khoom tawg tau koom nrog rau lwm tus chromosome. Reciprocal kev hloov chaw : Nyob rau hauv ib tug balanced reciprocal kev hloov chaw (Fig. 2.3), cov khoom siv caj ces yog pauv ntawm ob chromosomes uas tsis muaj qhov pom tseeb poob.
Pom zoo:
Dab tsi yog cov ntsiab lus tseem ceeb ntawm chromosomal txoj kev xav ntawm kev qub txeeg qub teg?
Boveri thiab Sutton's chromosome txoj kev xav ntawm kev qub txeeg qub teg hais tias cov noob muaj nyob rau ntawm qhov chaw tshwj xeeb ntawm chromosomes, thiab tias tus cwj pwm ntawm chromosomes thaum meiosis tuaj yeem piav qhia Mendel txoj cai ntawm kev xeeb tub
Dab tsi yog qhov chromosomal theory of inheritance quizlet?
Lub chromosomal txoj kev xav ntawm kev qub txeeg qub teg tuav tau tias kev sib cais ntawm niam thiab txiv chromosomes thaum lub sij hawm tsim gamete yog lub hauv paus ntawm lub cev ntawm Mendelian qub txeeg qub teg
Dab tsi yog peb qhov txawv txav chromosomal uas tuaj yeem kuaj pom los ntawm karyotype?
Qee cov kab mob chromosomal uas yuav kuaj pom muaj xws li: Down syndrome (Trisomy 21), tshwm sim los ntawm ib qho ntxiv chromosome 21; Qhov no yuav tshwm sim nyob rau hauv tag nrho los yog feem ntau cov cell ntawm lub cev. Edwards syndrome (Trisomy 18), tshwm sim los ntawm ib qho chromosome ntxiv 18. Patau syndrome (Trisomy 13), tshwm sim los ntawm ib qho chromosome 13 ntxiv
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom
Translocation syndrome yog dab tsi?
Translocation Down Syndrome yog ib hom Down syndrome uas tshwm sim thaum ib chromosome tawg thiab txuas mus rau lwm chromosome. Hauv translocation Down syndrome, ntxiv 21 chromosome tuaj yeem txuas rau 14 chromosome, lossis rau lwm tus lej chromosome xws li 13, 15, lossis 22