Chromosome kev hloov pauv yog hloov pauv uas cuam tshuam rau tag nrho cov chromosomes thiab tag nrho cov noob es tsis yog tsuas yog tus kheej nucleotides. Cov kev hloov pauv no tshwm sim los ntawm kev ua yuam kev hauv kev faib tawm ntawm tes uas ua rau ib ntu ntawm chromosome tawg, muab luam tawm lossis txav mus rau lwm tus chromosome.
Kev hloov pauv ntawm chromosomal yog dab tsi?
Chromosome mutation yog txheej txheem ntawm kev hloov pauv uas ua rau rov kho cov chromosome seem, tus lej txawv txav ntawm tus kheej chromosomes, lossis cov lej txawv txav ntawm chromosome.
Chromosomal mutations ua dab tsi?
Kev hloov pauv tshwm sim tsis tu ncua ntawm qhov tsawg zaus vim tshuaj tsis ruaj khov ntawm purine thiab pyrimidine hauv paus thiab ua yuam kev thaum lub sijhawm DNA rov ua dua. Lub ntuj raug tus kab mob rau tej yam ib puag ncig, xws li lub teeb ultraviolet thiab tshuaj carcinogens (piv txwv li, aflatoxin B1), kuj tuaj yeem ua rau kev hloov pauv.
3 hom chromosomal mutations yog dab tsi?
Peb qhov kev hloov pauv loj ntawm ib leeg-chromosome: deletion (1), duplication (2) thiab inversion (3). Ob qhov kev hloov pauv loj ntawm ob-chromosome: ntxig (1) thiab hloov pauv (2).
Dab tsi yog qee qhov kev hloov pauv ntawm chromosomal?
Qee qhov feem ntau chromosomal txawv txav muaj xws li:
- Down's syndrome lossis trisomy 21.
- Edward's syndrome lossis trisomy 18.
- Patau syndrome lossis trisomy 13.
- Cri du chat syndrome lossis 5p rho tawmSyndrome (kev tshem tawm ib nrab ntawm caj npab luv ntawm chromosome 5)
- Wolf-Hirschhorn syndrome lossis tshem tawm 4p syndrome.
