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1 alpha-heterochromatin
α-гетерохроматин, компактный гетерохроматинГетерохроматин, образующий плотную, хорошо окрашиваемую зону, занимающую центральное положение в хромоцентре chromocenter, не политенизируется; термин «-Г» предложен Э.Хейтцем в 1934 при анализе политенных хромосом дрозофилы Drosophila virilis; у многих дрозофил -Г. и -гетерохроматин трудно дифференцируемы.Англо-русский толковый словарь генетических терминов > alpha-heterochromatin
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2 partial replication model
модель «частичной» репликацииМодель, в соответствии с которой часть ДНК хромоцентра chromocenter никогда не реплицируется при политенизации (polytenization), а остальная ДНК реплицируется вместе с эухроматином euchromatin, хотя при этом число циклов репликации обычно не совпадает; дифференциация ДНК хромоцентра согласно этой модели соответствует ее разделению на α-гетерохроматин alpha-heterochromatin и β-гетерохроматин beta-heterochromatinАнгло-русский толковый словарь генетических терминов > partial replication model
См. также в других словарях:
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