Cov txheej txheem:
- Dab tsi ua rau kev sib koom siab?
- kev sib koom siab nyob qhov twg?
- Yuav ua li cas thiaj hu ua kev sib koom siab?
- Vim li cas kev sib koom ua ke yog ib qho kab mob caj ces?
![Thaum twg kev sib koom ua ke tshwm sim? Thaum twg kev sib koom ua ke tshwm sim?](https://i.boatexistence.com/preview/questions/18742971-when-does-consanguinity-occur-j.webp)
Video: Thaum twg kev sib koom ua ke tshwm sim?
![Video: Thaum twg kev sib koom ua ke tshwm sim? Video: Thaum twg kev sib koom ua ke tshwm sim?](https://i.ytimg.com/vi/-EXBJ8UaJcY/hqdefault.jpg)
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Hauv kev tshuaj ntsuam genetics, consanguinity txhais tau tias yog kev sib koom ua ke ntawm ob tus neeg uas muaj feem cuam tshuam nrog cov kwv tij thib ob lossis ze dua, nrog qhov sib npaug (F) sib npaug lossis siab dua 0.0156 qhov twg (F) sawv cev rau qhov kev faib ua feem ntawm cov noob caj noob ces uas tus menyuam ntawm ob niam txiv sib koom ua ke yuav tau txais cov noob zoo ib yam…
Dab tsi ua rau kev sib koom siab?
Kev sib txuas lus yog hais txog thaum ob niam txiv yog cov txheeb ze (lawv sib koom poj koob yawm txwv) Ib qho piv txwv yog thaum ob niam txiv yog thawj kwv tij txheeb ze. Consanguinity yog heev muaj nyob rau hauv ntau haiv neeg. Yog tias ob niam txiv sib koom ua ke (txog) lawv cov menyuam muaj feem ntau yuav raug cuam tshuam los ntawm autosomal recessive genetic disorders.
kev sib koom siab nyob qhov twg?
Tam sim no, cov khub niam txiv muaj feem cuam tshuam nrog cov kwv tij txheeb ze lossis ze dua (F ≥ 0.0156) thiab lawv cov xeeb leej xeeb ntxwv rau kwv yees li 10.4% ntawm cov pej xeem hauv ntiaj teb. Tus nqi siab tshaj ntawm kev sib yuav sib yuav tshwm sim hauv qaum teb thiab sub-Saharan Africa, Middle East, thiab sab hnub poob, nruab nrab, thiab sab qab teb Asia
Yuav ua li cas thiaj hu ua kev sib koom siab?
Consanguinity txhais tau tias " kev txheeb ze ntawm cov tib neeg tau nqis los ntawm yam tsawg kawg ib tus poj koob yawm txwv " 1 Muab ntau yooj yim, consanguinity txhais tau tias ob cov tib neeg yog "cov txheeb ze ntshav" lossis "cov txheeb ze lom neeg." Peb feem ntau tau txais cov ntaub ntawv thiab cov lus nug txog tus menyuam los ntawm lub koomhaum ntawm ob tus neeg muaj feem cuam tshuam.
Vim li cas kev sib koom ua ke yog ib qho kab mob caj ces?
Kev sib yuav sib cog lus txhais tau tias yog kev sib yuav ntawm cov neeg txheeb ze; Txawm li cas los xij, geneticists feem ntau siv lo lus no los hais txog kev sib koom ua ke ntawm cov kwv tij thib ob lossis ze dua. Consanguinity ua rau muaj kev pheej hmoo ntawm congenital anomalies thiab autosomal recessive kab mob; qhov kev sib raug zoo, qhov kev pheej hmoo siab dua.
Pom zoo:
Puas yog kev tshwm sim lossis kev tshwm sim?
![Puas yog kev tshwm sim lossis kev tshwm sim? Puas yog kev tshwm sim lossis kev tshwm sim?](https://i.boatexistence.com/preview/questions/18694425-is-it-reveling-or-revelling-j.webp)
Reveling, kuj spelled reveling, txhais tau tias muaj lub sij hawm zoo, los yog zoo siab rau ib yam dab tsi. Yog tias koj tawm mus ua kev zoo siab rau koj kawm tiav thiab koj haus dej haus, tog thiab muaj lub sijhawm zoo, qhov no yog qhov piv txwv ntawm thaum koj rov qab los .
Thaum twg kev sib koom ua lag luam thiab kev sib koom ua ke tau tawg?
![Thaum twg kev sib koom ua lag luam thiab kev sib koom ua ke tau tawg? Thaum twg kev sib koom ua lag luam thiab kev sib koom ua ke tau tawg?](https://i.boatexistence.com/preview/questions/18712299-when-are-joint-ventures-and-syndicates-dissolved-j.webp)
Zoo li kev sib koom ua lag luam, kev sib koom ua ke yog yaj sai npaum li nws lub hom phiaj tau ua tiav. Kev sib koom ua ke ntawm ob lub tuam txhab lossis lwm lub koom haum ua lag luam los tsim ib lub lag luam yog hu ua kev sib koom ua ke . Daim ntawv twg ntawm kev ua lag luam ua tswv yooj yim tshaj plaws?
Thaum twg kev sib ntaus sib tua ntawm guadalcanal tshwm sim?
![Thaum twg kev sib ntaus sib tua ntawm guadalcanal tshwm sim? Thaum twg kev sib ntaus sib tua ntawm guadalcanal tshwm sim?](https://i.boatexistence.com/preview/questions/18717205-when-did-the-battle-of-guadalcanal-take-place-j.webp)
Kev sib tw Guadalcanal, tseem hu ua Kev Sib Tw ntawm Guadalcanal thiab codenamed Operation Watchtower los ntawm Asmeskas cov tub rog, yog kev ua tub rog tawm tsam ntawm 7 Lub Yim Hli 1942 thiab 9 Lub Ob Hlis 1943 ntawm thiab ncig ntawm Guadalcanal Island hauv Pacific theatre ntawm Ntiaj Teb.
Qhov kev txav twg tshwm sim ntawm 1st metatarsophalangeal sib koom?
![Qhov kev txav twg tshwm sim ntawm 1st metatarsophalangeal sib koom? Qhov kev txav twg tshwm sim ntawm 1st metatarsophalangeal sib koom?](https://i.boatexistence.com/preview/questions/18745583-which-movements-occur-at-the-1st-metatarsophalangeal-joint-j.webp)
Kev txav ntawm thawj MTP sib koom ua ke ntawm dorsiflexion (70 ° txog 90 °) thiab plantar flexion(kwv yees 35 ° txog 50 °). Lwm cov pob qij txha MTP tso cai txog 40 ° dorsiflexion thiab 40 ° plantar flexion, nrog rau ob peb qib ntawm kev abduction (tawm ntawm tus ntiv taw thib ob) thiab adduction (mus rau tus ntiv taw thib ob) .
Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
![Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog? Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?](https://i.boatexistence.com/preview/questions/18769712-in-an-unbiased-pn-junction-the-junction-current-at-equilibrium-is-j.webp)
Nyob rau hauv qhov tsis ncaj ncees PN-kho qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog zero, vim tias sib npaug tab sis cov neeg nqa khoom hla hla kev sib tshuam . Thaum pn kev sib tshuam tsis ncaj ncees qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog?