Ib lub hauv paus amorphous loj pom nyob rau hauv lub nuclei ntawm larval salivary gland cells ntawm Drosophila.
Koj pom chromocenter qhov twg?
Nrog ntau cov kab mob centromeres, pericentromeric heterochromatin thiab qee zaum txawm tias telomeres pawg los tsim ib lub npe nuclear lossis aggregate hu ua chromocenter (24). Cov aggregates no feem ntau pom ntawm lub nuclear periphery lossis ib ncig ntawm nucleolus.
Chromocenter hauv nucleus yog dab tsi?
: a densely staining aggregation of heterochromatic regions in the nucleus ntawm qee lub hlwb.
Chromocenter hauv polytene chromosome yog dab tsi?
polytene chromosome chromocentre. Lus Txhais: Ib cheeb tsam uas thaj tsam centric ntawm polytene chromosomes koom ua ke.
Heterochromatin thiab euchromatin yog dab tsi?
Heterochromatin yog txhais tau tias yog thaj tsam ntawm chromosome uas yog tsaus nti nrog DNA tshwj xeeb stainthiab yog nyob rau hauv daim ntawv sib piv condensed. Euchromatin txhais tau tias yog thaj tsam ntawm cov chromosome uas yog nplua nuj nyob rau hauv gene concentration thiab nquag koom rau hauv cov txheej txheem transcription.
