Vim li cas txiv neej tuag ntxov dua poj niam

Cov txheej txheem:

Vim li cas txiv neej tuag ntxov dua poj niam
Vim li cas txiv neej tuag ntxov dua poj niam
Anonim

Cov kws tshawb fawb Australia tau tshawb pom tias yog vim li cas txiv neej muaj sia nyob tsawg dua poj niam. Nws hloov tawm hais tias yog vim li cas dag tsis nyob rau hauv tus cwj pwm phem thiab txaus ntshai ua hauj lwm, tab sis nyob rau hauv ib tug tshwj xeeb hom ntawm kev sib deev chromosomes

Cov kws tshawb fawb tau tshuaj xyuas cov ntaub ntawv muaj kev sib deev chromosome los txheeb xyuas cov qauv zoo rau cov txiv neej ntawm txhua hom. Cov kws tshawb fawb kuj tau sim qhov kev xav tias Y-chromosome tsis muaj peev xwm tiv thaiv tus neeg los ntawm cov noob tsis zoo.

Tom qab tshawb xyuas cov ntaub ntawv lifespan ntawm primates, lwm yam tsiaj, noog, tsiaj reptiles, ntses, amphibians, thiab kab, nws hloov tawm hais tias lawv txhua tus muaj heterogametic pw ua ke (nrog sib txawv chromosomes) uas tuag ua ntej homogametic.

Kev sib deev muaj zog muaj XY chromosome thiab cov poj niam muaj XX. Yog tias muaj teeb meem tshwm sim hauv X chromosome, cov khoom siv caj ces hauv X chromosome ntxiv tuaj yeem ua raws li qhov tshwj xeeb rau kev qhia cov noob zoo.

Kab mob xws li hemophilia, qee hom kab mob txha caj qaum, kab mob paj hlwb hu ua Partington syndrome tau txuas rau X chromosome.

Los ntawm qhov kev xav ntawm caj ces, ob Xs tuav ib X thiab ib Y feem ntau, cov kws tshaj lij hais.

  • kab mob
  • txiv neej
  • Ychromosomes
  • Pom zoo: