间隔基因(gap genes)
关键词: 间隔基因 gap genes来源: 互联网
沿果蝇前后轴最早表达的合子基因,它们均编码转录因子,参与果蝇胚胎前后轴早期模式的形成。胚胎尚处于合胞体胚层阶段时,沿前后轴的Bicoid蛋白梯度即启动了间隔基因的表达。间隔基因包括hunchback、giant、krüppel、knirps、tailness等。由于这组基因发生突变时会导致体节模式发生间隔缺失现象,所以将它们称为间隔基因。
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