一般认为外源DNA常在刚刚完成复制或正在进行复制的染色体区整合。
什么是动校正？什么是静校正？
You are the network administrator of a medium-sized company， and users are complaining that they cannot send emails to some organizations. During your troubleshooting， you notice that your DNS MX record is blacklisted by several public blacklist filters. After clearing these listings for your IP address， and assuming that your email server has the right virus protection in place， what are two possible solutions to prevent this from happening in the future？（） ["Change your Internet provider.","Change your public IP address.","Allow the email server to send traffic only to TCP port 25.","Put your email server in a DMZ.","Use a separate public IP address for your email server only."]
人工养殖的水产动物品种遗传特点表现为：群体数量大，随机交配，杂合度低。
《中华人民共和国宪法》规定：“中华人民共和国公民有受教育的（）。” ["权利","义务","权利和义务","资格"]
儿童的基本权利是（ ）、（ ）、（ ）和（ ）。
