<\/div>\n\n\n\n
\u5408\u6210\u671f\u7d50\u675f\u5f8c\uff0c\u7d30\u80de\u9032\u5165 G2<\/sub>\u671f\u3002 G2<\/sub>\u671f<\/strong>\u662f\u7b2c\u4e8c\u500b\u9593\u9699\u671f\uff0c\u5728\u6b64\u671f\u9593\u7d30\u80de\u7e7c\u7e8c\u751f\u9577\u4e26\u70ba\u6709\u7d72\u5206\u88c2\u505a\u597d\u5fc5\u8981\u7684\u6e96\u5099\u3002 <\/span>\u5728 G1<\/sub>\u3001S \u548c G2<\/sub>\u671f\u4e4b\u9593\uff0c\u7d30\u80de\u5728 G1<\/sub>\u671f\u7684\u6301\u7e8c\u6642\u9593\u4e0a\u8b8a\u5316\u6700\u5927\u3002 \u7d30\u80de\u53ef\u80fd\u6703\u5728\u9019\u88e1\u5ea6\u904e\u5e7e\u500b\u5c0f\u6642\uff0c\u751a\u81f3\u5f88\u591a\u5929\u3002 S\u671f\u901a\u5e38\u6301\u7e8c 8-10 \u5c0f\u6642\uff0cG2<\/sub>\u671f\u7d04\u6301\u7e8c 5 \u5c0f\u6642\u3002 \u8207\u9019\u4e9b\u968e\u6bb5\u76f8\u53cd\uff0cG0<\/sub>\u671f<\/strong>\u662f\u7d30\u80de\u9031\u671f\u7684\u4f11\u606f\u671f\u3002 \u66ab\u6642\u505c\u6b62\u5206\u88c2\u4e26\u8655\u65bc\u4f11\u606f\u72c0\u614b\u7684\u7d30\u80de\uff08\u5e38\u898b\u60c5\u6cc1\uff09\u548c\u6c38\u4e45\u505c\u6b62\u5206\u88c2\u7684\u7d30\u80de\uff08\u5982\u795e\u7d93\u7d30\u80de\uff09\u88ab\u8a8d\u70ba\u8655\u65bc G0<\/sub>\u72c0\u614b\u3002<\/span><\/p>\n\n\n\n\u67d3\u8272\u9ad4\u7684\u7d50\u69cb<\/h3>\n\n\n\n
\u4eba\u9ad4\u6bcf\u5929\u6709\u6578\u5341\u5104\u500b\u7d30\u80de\u5206\u88c2\u3002 \u5728\u9593\u671f\u7684\u5408\u6210\u968e\u6bb5\uff08\u5373DNA\u5408\u6210\u7684S\u671f\uff09\uff0c\u7d30\u80de\u5167 DNA \u7684\u91cf\u7cbe\u78ba\u5730\u52a0\u500d\u3002 \u56e0\u6b64\uff0c\u5728DNA\u8907\u88fd\u4e4b\u5f8c\u3001\u7d30\u80de\u5206\u88c2\u4e4b\u524d\uff0c\u6bcf\u500b\u7d30\u80de\u5be6\u969b\u4e0a\u90fd\u5305\u542b\u6bcf\u689d\u67d3\u8272\u9ad4\u7684\u5169\u500b\u62f7\u8c9d\u3002 \u67d3\u8272\u9ad4\u7684\u6bcf\u500b\u526f\u672c\u90fd\u7a31\u70ba\u59d0\u59b9\u67d3\u8272\u55ae\u9ad4<\/strong>\u3014sister chromatid\u3015<\/small>\uff0c\u4e26\u8207\u53e6\u4e00\u500b\u526f\u672c\u7269\u7406\u5730\u7d50\u5408\u3002<\/span>\uff08\u8acb\u6ce8\u610f\uff0c\u7121\u8ad6\u4eba\u7684\u6027\u5225\u5982\u4f55\uff0c\u90fd\u4f7f\u7528\u8853\u8a9e\u201c\u59d0\u59b9\u67d3\u8272\u55ae\u9ad4\u201d\u3002\uff09 \u4e2d\u7bc0<\/strong>\u3014centromere\u3015<\/small>\u662f\u9023\u63a5\u4e00\u500b\u59d0\u59b9\u7684\u7d50\u69cb\u67d3\u8272\u55ae\u9ad4\u5230\u53e6\u4e00\u500b\u3002<\/span> \u7531\u65bc\u4eba\u9ad4\u7d30\u80de\u6709 46 \u689d\u67d3\u8272\u9ad4\uff0c\u56e0\u6b64\u5728\u6b64\u968e\u6bb5\uff0c\u7d30\u80de\u5167\u6709 92 \u689d\u67d3\u8272\u55ae\u9ad4 (46 \u00d7 2)\u3002 \u78ba\u4fdd\u4e0d\u8981\u6df7\u6dc6\u4e00\u5c0d\u67d3\u8272\u55ae\u9ad4\u3014a pair of chromatids\u3015<\/small>\uff08\u4e00\u689d\u67d3\u8272\u9ad4\u53ca\u5176\u5728\u6709\u7d72\u5206\u88c2\u671f\u9593\u9644\u8457\u7684\u7cbe\u78ba\u526f\u672c\uff09\u548c\u4e00\u5c0d\u540c\u6e90\u67d3\u8272\u9ad4\u3014a homologous pair of chromosomes\u3015<\/small>\uff08\u5169\u5c0d\u55ae\u7368\u907a\u50b3\u7684\u67d3\u8272\u9ad4\uff0c\u5b83\u5011\u5206\u5225\u7531\u7236\u6bcd\u7684\u6bcf\u500b\u67d3\u8272\u9ad4\u907a\u50b3\u800c\u4f86\uff09\u7684\u6982\u5ff5\uff08\u5716 3.31\uff09\u3002<\/p>\n\n\n\n<\/div>\n\n\n\n