Qhov sib txawv tseem ceeb ntawm trisomy thiab triploidy yog qhov trisomy yog ib qho mob uas ib lub cev muaj cov chromosome ntxiv ua rau tag nrho li 47 thaum triploidy yog ib qho mob uas lub cev muaj tag nrho cov chromosome ntxiv ua tus tag nrho li 69.
Tib neeg genome muaj tag nrho ntawm 46 chromosomes, thiab lawv muaj nyob ua khub. Li no, muaj 23 chromosome khub nyob rau hauv tib neeg nucleus. Ntawm cov khub no, 22 yog autosomes, uas yog lub luag haujlwm rau cov yam ntxwv somatic thaum ib khub yog poj niam txiv neej chromosomes uas yog lub luag haujlwm rau kev txiav txim siab poj niam txiv neej thiab poj niam txiv neej. Tsis tas li ntawd, cov ntaub ntawv caj ces kis ntawm niam txiv mus rau cov xeeb ntxwv thaum yug me nyuam. Rau lub hom phiaj no, lub genome yuav tsum tau replicated thiab raug mus rau gametes.
Qee zaum, yuam kev tuaj yeem tshwm sim hauv cov txheej txheem no. Cov yuam kev no ua rau chromosomal aberrations lossis chromosome tooj hloov. Aneuploidy thiab polyploidy yog ob hom uas hloov tus lej chromosome. Hauv aneuploidy, tus lej chromosome hloov hauv ib qho. Hauv polyploidy, ntau tus lej ntawm chromosomes hloov pauv hauv genome. Trisomy yog ib qho mob aneuploidy thaum triploidy yog ib qho mob polyploidy uas hloov cov lej ntawm chromosomal. Yog li ntawd, qhov sib txawv ntawm trisomy thiab triploidy feem ntau yog nyob ntawm tus naj npawb ntawm chromosomes hloov nyob rau hauv lub genome.
Trisomy yog dab tsi?
Trisomy yog ib qho mob aneuploidy. Hauv qhov xwm txheej no, lub genome muaj cov chromosome ntxiv. Nws yog qhov xwm txheej uas lub cev muaj 2n + 1 chromosome tooj. Hauv cov lus yooj yim, hauv trisomy, lub cev muaj tag nrho ntawm 47 chromosomes es tsis yog 46 chromosomes. Ib qho chromosome tau ntxiv rau lub genome ntawm lub cev. Nws yog hom chromosomal abnormality.
Daim duab 01: Trisomy
Trisomy tshwm sim los ntawm kev tsis sib txuas ntawm homologous chromosomes thaum lub sijhawm sib deev ntawm tes los ntawm meiosis. Yog li ntawd, lub qe qe los yog cov phev cell tuaj yeem muaj tag nrho ntawm 24 chromosomes. Thaum sib sau ua ke ntawm hom kev sib deev nrog cov poj niam sib deev ntawm tes, ua rau zygote yuav muaj tag nrho ntawm 47 chromosomes uas hais txog trisomy. Qhov tseem ceeb ntawm no yog, trisomy ua rau muaj kev cuam tshuam loj heev rau cov kab mob ua rau tuag taus xws li Down syndrome (trisomy ntawm chromosome 21), Edward syndrome (trisomy ntawm chromosome 18), Triple X syndrome (Pex chromosomes XXX), Klinefelter syndrome (pom niam txiv. chromosome XXY) thiab Patau syndrome (trisomy ntawm chromosome 13), thiab lwm yam. Thaum cov me nyuam cuam tshuam nrog trisomy, lawv qhia txog kev loj hlob qeeb, kev yug me nyuam, kev tsis taus thiab kev txawj ntse thiab lwm yam.
Triploidy yog dab tsi?
Triploidy yog ib qho teeb meem chromosomal uas tus menyuam hauv plab muaj tag nrho cov chromosomes ntxiv. Ib txheej txheej ntawm chromosome muaj 23 chromosomes nyob rau hauv ib tug haploid cell (n). Thaum nws yog ob teev, nws dhau los ua 46 (2n). Thaum triploidy tshwm sim, nws dhau los ua tag nrho ntawm 69 chromosomes (3n). Yog li ntawd, nyob rau hauv triploidy, ib gamete muaj 23 chromosomes thaum lub opposite pw ua ke gamete muaj 46 chromosomes.
Daim duab 02: Triploidy
Thaum lawv sib sau ua ke, lawv tsim 3n zygote uas muaj 69 chromosomes. Txhua chromosome muaj nyob rau hauv peb daim ntawv tsis yog ob daim ntawv luam. Hom no ntawm cov me nyuam mos nchuav menyuam thaum ntxov cev xeeb tub. Yog tias cov me nyuam mos triploidy muaj sia nyob, lawv qhia txog kev yug me nyuam xws li kev loj hlob qeeb, plawv tsis xws luag thiab neural tube defects. Triploidy tuaj yeem pom hauv qee lub hlwb. Hauv qhov xwm txheej ntawd, nws tsis yog qhov teeb meem loj, thiab nws hu ua mosaic triploidy.
Qhov Zoo sib xws ntawm Trisomy thiab Triploidy yog dab tsi?
- Trisomy thiab Triploidy yog chromosomal abnormalities.
- Ob qho kev mob tshwm sim qhia kev yug me nyuam thiab ua rau muaj kev sib txawv.
- Nyob rau hauv ob qho xwm txheej, ib gamete muaj cov lej txawv txav ntawm chromosomes.
Qhov txawv ntawm Trisomy thiab Triploidy yog dab tsi?
Thaum tus me nyuam tau txais ib qho chromosome ntxiv, nws yog ib qho mob hu ua trisomy thaum lub fetus tau txais tag nrho cov chromosomes ntxiv, nws yog ib qho mob hu ua triploidy. Hauv ob qho xwm txheej, tus me nyuam hauv plab muaj qhov txawv txav ntawm chromosomes. Yog li, qhov sib txawv tseem ceeb ntawm trisomy thiab triploidy yog tag nrho cov chromosomes. Trisomy muaj 47 chromosomes thaum triploidy muaj 69 chromosomes.
Cov duab hauv qab no qhia cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm trisomy thiab triploidy hauv daim ntawv teev npe.
Summary – Trisomy vs Triploidy
Vim qee qhov yuam kev hauv gamete tsim, zygote tuaj yeem tau txais tus lej txawv txav ntawm chromosomes. Trisomy thiab triploidy yog ob qho tib si chromosomal txawv txav. Trisomy yog hais txog tus mob uas muaj cov chromosome ntxiv thaum triploidy hais txog tus mob uas muaj tag nrho cov chromosomes ntxiv. Yog li hauv trisomy tag nrho cov chromosomes yog 47 thaum nyob rau hauv triploidy nws yog 69. Qhov no yog qhov txawv ntawm trisomy thiab triploidy.
