Warning: file_put_contents(): Only 0 of 5297 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 天堂资源8中文最新版,日本道综合一本久久久88,欧美日韩国产综合视频在线观看
An aneuploid state in which a third homologous chromosome is present in addition to the normal autosomal pair is called trisomy. 除了正常染色體對以外，還存在有第二種同源染色體的非整倍體狀態(tài)，被稱為三體性。