Cov noob engrailed yog xav tias yog 'selector' gene uas tswj kev qhia ntawm lwm cov noob kom hais txog 'tom qab tus kheej' ntawm pawg hlwb uas muaj feem cuam tshuam los ntawm kab.
engrailed protein ua dab tsi?
Kev ua haujlwm nyob rau hauv txhua qhov anterior compartment txhawm rau txhawm rau cov proteins uas ua nyob rau hauv lub posterior compartments, xws li Wingless, Decapentaplegic, Patched, Deformed thiab Cubitus interrruptus. EN kuj tseem muaj qee ntu tshwj xeeb cuam tshuam, xws li txo qis Ultrabithorax hauv parasegment rau.
Ib engrailed a gap gene?
Seg polarity noob yog qhia nyob rau hauv lub embryo tom qab kev qhia ntawm qhov sib txawv genes thiab khub-txoj cai genes. Cov feem ntau hais piv txwv ntawm cov noob no yog engrailed thiab gooseberry nyob rau hauv Drosophila melanogaster.
Vim li cas engrailed hu ua ib tug selector noob?
Thawj paub txog nws lub luag haujlwm hauv arthropod embryological txoj kev loj hlob, ua haujlwm nrog kev sib koom tes nrog Hox noob, engrailed tau pom tias tseem ceeb hauv lwm qhov chaw ntawm kev loj hlob. … Nws ua raws li "selector" noob, hais txog tus kheej tshwj xeeb rau cov cheeb tsam ntawm lub cev, thiab sib koom ua ke ntawm kev qhia ntawm cov noob caj ces.
Drosophila nthuav tawm qhov twg?
Sib tham sib ya, Drosophila. engrailed yog thawj zaug qhia nyob rau hauv ntxov gastrulating embryos, peb mus rau plaub teev tom qab fertilization. Thawj kab txaij tsuas yog tom qab mus rau qhov sib sib zog nqus groove subdividing lub taub hau (cephalic furrow). Tom qab ntawd, 13 lwm kab txaij tshwm sim raws li qhov ntev ntawm lub embryo.
