Video: Aneuploidy muab piv txwv li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Anuploidy . Anuploidy yog qhov muaj qhov txawv txav ntawm cov chromosomes hauv ib lub cell, rau piv txwv tib neeg lub xov tooj muaj 45 lossis 47 chromosomes es tsis yog 46 ib txwm muaj. Nws tsis suav nrog qhov sib txawv ntawm ib los yog ntau dua ua tiav cov chromosomes.
Tib neeg kuj nug, qee qhov piv txwv ntawm aneuploidy yog dab tsi?
Trisomy yog tus feem ntau aneuploidy . Hauv trisomy, muaj ib qho chromosome ntxiv. Ib qho trisomy feem ntau yog trisomy 21 (Down syndrome). Lwm yam trisomies suav nrog trisomy 13 (Patau syndrome) thiab Trisomy 18 (Edwards syndrome).
Tsis tas li ntawd, aneuploidy yog dab tsi thiab nws hom? Anuploidy : Ntxiv lossis tsis muaj chromosomes. Kev hloov pauv hauv cov khoom siv caj ces yog hu ua mutations. Hauv ib hom kev hloov pauv, cov hlwb yuav xaus nrog ib qho ntxiv lossis tsis muaj chromosome. Txhua hom muaj tus yam ntxwv chromosome tooj, xws li 46 chromosomes rau tib neeg lub cev cell.
Yog li ntawd, koj txhais li cas los ntawm aneuploidy?
Kho mob Txhais ntawm Aneuploidy kev kho mob : Ib qho mob uas ib tug neeg muaj ib lossis ob peb chromosomes saum toj no lossis qis dua tus lej chromosome. Piv txwv li, peb daim ntawv luam ntawm chromosome21, uas yog tus yam ntxwv ntawm Down syndrome, yog ib daim ntawv ntawm aneuploidy.
Vim li cas Down syndrome yog ib qho piv txwv ntawm aneuploidy?
Down Syndrome yog tej zaum tus paub zoo tshaj plaws piv txwv ntawm ib tug chromosomal aneuploidy , tshwm sim los ntawm ib daim ntawv luam ntxiv ntawm chromosome 21 hu ua trisomy 21. Txawm hais tias trisomy tuaj yeem tshwm sim nrog txhua tus chromosome, qhov xwm txheej tsis tshua muaj tshwm sim.
Pom zoo:
Yam ua piv txwv piv txwv li cas?
Ib khub xaj yog ib khub ntawm tus lej hauv ib qho kev txiav txim. Piv txwv li, (1, 2) thiab (- 4, 12) raug txiav ua khub. Qhov kev txiav txim ntawm ob tus lej tseem ceeb: (1, 2) tsis sib npaug rau (2, 1) -- (1, 2) ≠ (2, 1)
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Koj muab ob qhov piv txwv li cas?
VIDEO Kuj tseem yuav paub yog, qee qhov piv txwv ntawm cov piv txwv yog dab tsi? Hauv lej, a piv qhia tias pes tsawg zaus ib tus lej muaj lwm tus. Rau piv txwv , yog hais tias muaj yim txiv kab ntxwv thiab rau lemons nyob rau hauv ib lub tais ntawm txiv hmab txiv ntoo, ces tus piv ntawm txiv kab ntxwv rau txiv qaub yog yim rau rau (uas yog, 8∶6, uas yog sib npaug rau piv 4∶3).