Dab tsi yog duplication hauv biology?
Dab tsi yog duplication hauv biology?

Video: Dab tsi yog duplication hauv biology?

Video: Dab tsi yog duplication hauv biology?
Video: Uv koj los laus tsis zoo dab tsi by nkaujnoog hawj 2024, Kaum ib hlis
Anonim

Duplication yog ib hom kev hloov pauv uas suav nrog kev tsim ib lossis ntau daim ntawv theej ntawm cov noob lossis thaj tsam ntawm chromosome. Gene luam tawm yog ib qho tseem ceeb mechanism uas evolution tshwm sim.

Dhau li ntawm no, dab tsi ua rau cov noob duplication?

Gene duplication (los yog chromosomal luam tawm los yog noob amplification) yog ib qho tseem ceeb mechanism los ntawm qhov tshiab caj ces Cov khoom yog tsim thaum lub sij hawm molecular evolution. Cov peev txheej ntawm gene duplications muaj xws li ectopic recombination, retrotransposition tshwm sim, aneuploidy, polyploidy, thiab replication slippage.

Dab tsi yog duplication hauv meiosis? Kev Kho Mob Txhais ntawm Chromosome luam tawm Chromosome luam tawm : Ib feem ntawm chromosome nyob rau hauv duplicate. Duplications Feem ntau tshwm sim los ntawm ib qho kev tshwm sim hu ua tsis sib npaug hla dhau (recombination) uas tshwm sim ntawm misaligned homologous chromosomes thaum lub sij hawm meiosis (kab mob cell tsim).

Ntawm no, scientific duplication yog dab tsi?

Duplication : Ib feem ntawm chromosome nyob rau hauv duplicate, ib hom kev hloov pauv (hloov) cuam tshuam nrog kev tsim ib lossis ntau daim ntawv luam ntawm ib qho DNA, suav nrog cov noob lossis txawm tias tag nrho cov chromosome.

Dab tsi yog tandem duplication hauv biology?

Tandem exon ua luam tawm yog txhais raws li luam tawm ntawm exons nyob rau hauv tib lub noob los muab nce mus rau tom ntej exon. Kev soj ntsuam tag nrho ntawm cov noob hauv Homo sapiens, Drosophila melanogaster, thiab Caenorhabditis elegans tau pom 12, 291 qhov xwm txheej ntawm tandem duplication nyob rau hauv exons nyob rau hauv tib neeg, ya, thiab cua nab.

Pom zoo: