生物体细胞中的染色体数一般用2N表示,配子中的染色体数用N表示,如人体体细胞中的染色体数为2N=46,精子和卵细胞的染色体数为N=23。二倍体是指体细胞中含有两个染色体组的个体,如人体2N=2x=46。多倍体指体细胞中含有三个以上染色体组的个体。如普通小麦2N=6x=42(六倍体)。
染色体减数分组较多发生于多倍体细胞中。
Chromosome reductional grouping happened more frequently in polyploid cells.
双核、多倍体细胞、小叶及结节周围的肝细胞易呈明显阳性,一种小而核深染的多角细胞常呈强阳性。
A kind of thin, polygonal liver cells with one or two round or oval and deeply stained nuclei frequently stained strongly positive.
与此同时,单倍体细胞逐渐减少,产生大量多倍体和非整倍体细胞。
Meanwhile the ratio of haploid cell in the callus dropped gradually, and a lot of polyploid and aneuploid cells appeared.
应用推荐