Cov txheej txheem:
Video: Dab tsi yog ob qho laj thawj tseem ceeb ntawm kev mob caj ces hauv tib neeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj peb hom kab mob caj ces:
- Ib leeg- noob caj noob ces , qhov twg kev hloov pauv cuam tshuam rau ib qho noob . Sickle cell anemia yog ib qho piv txwv.
- Chromosomal tsis meej pem , qhov twg chromosomes (los yog ib feem ntawm chromosomes) ploj lawm los yog hloov.
- nyuaj tsis meej pem , qhov twg muaj kev hloov pauv hauv ob los yog ntau dua noob .
Ntawm no, ob qho laj thawj tseem ceeb ntawm kev mob caj ces yog dab tsi?
Kev mob caj ces tuaj yeem tshwm sim los ntawm kev hloov pauv hauv ib qho noob (monogenic tsis meej pem ), los ntawm kev hloov pauv hauv ntau yam noob (multifactorial qub txeeg qub teg tsis meej pem ), los ntawm kev sib koom ua ke noob Kev hloov pauv thiab ib puag ncig, lossis los ntawm kev puas tsuaj rau chromosomes (hloov tus lej lossis cov qauv ntawm tag nrho cov chromosomes, cov qauv uas
Ib yam li ntawd, dab tsi yog qhov ua rau kev mob caj ces quizlet? Ib txhia kab mob caj ces yog ua rau los ntawm kev hloov pauv hauv DNA ntawm noob . Lwm yam tsis meej pem yog ua rau los ntawm kev hloov ntawm tag nrho cov qauv los yog tus naj npawb ntawm chromosomes.
Tsis tas li ntawd, qhov twg ntawm ob qho laj thawj tseem ceeb yog lub luag haujlwm rau Down syndrome?
Qhov feem ntau hom ntawm Down syndrome hu ua trisomy 21. Qhov no yog ib yam mob uas tib neeg muaj 47 chromosomes nyob rau hauv txhua lub cell es tsis txhob ntawm 46. Ib qho yuam kev hauv cell division hu ua nondisjunction ua rau trisomy 21. Lub xub ntiag ntawm no ntxiv ib feem ntawm chromosome 21 ua rau qee Down syndrome yam ntxwv.
5 kab mob caj ces yog dab tsi?
Cov ntaub ntawv hais txog 5 Hom Kab Mob Ntshav Qab Zib
- Down Syndrome.
- Thalassemia.
- Cystic Fibrosis.
- Tus kab mob Tay-Sachs.
- Sickle Cell Anemia.
- Kawm ntxiv.
- Pom zoo.
- Qhov chaw.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm cov noob caj noob ces rau kev loj hlob ntawm fetal?
Kev soj ntsuam ntawm lub luag haujlwm ntawm chromosomes hauv tib neeg txoj kev loj hlob thiab kev loj hlob ntawm lub fetus tau mob siab rau qhov txawv txav ntawm chromosomal. Cov noob muaj cov lus qhia rau kev loj hlob thiab kev loj hlob. Qee qhov kev hloov gene ua rau cov gene faulty kom cov lus nyeem tsis raug lossis tsis nyeem tag nrho los ntawm lub xovtooj ntawm tes
Dab tsi yog qhov laj thawj tseem ceeb ntawm lub dab dej?
Qhov feem ntau ua rau lub dab dej yog qhov hloov pauv hauv cov dej hauv av los yog nce sai sai hauv cov dej saum npoo av. Lub dab dej dab dej feem ntau tshwm sim thaum cov dej nag uas muaj kua qaub nkag los ntawm cov av thiab cov xuab zeb kom txog rau thaum nws mus txog rau lub pob zeb soluble xws li ntsev, limestone lossis sandstone
Dab tsi yog ob qho laj thawj vim li cas photosynthesis tseem ceeb?
Photosynthesis yog cov nroj tsuag noj hauv dej, carbon dioxide, thiab lub teeb los ua suab thaj thiab oxygen. Qhov no tseem ceeb heev vim tias txhua yam muaj sia nyob xav tau oxygen kom muaj sia nyob. Txhua tus neeg tsim khoom tsim cov pa oxygen thiab qab zib rau cov neeg siv khoom thib ob thiab tom qab ntawd cov tsiaj txhu noj cov tsiaj uas noj cov nroj tsuag
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus
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