[問題] 分子生物學的解螺旋問題！
目前我對超螺旋的理解是
當變緊時會正超螺旋，變鬆的話會負超螺旋
問題出在細菌在複製時是正超螺旋，但原因是
1、解螺旋時硬往兩邊扯，讓兩邊變緊
還是
2、解螺旋時是用別的方法，讓turn數真的減少，再根據公式得到w應該為正
哪一個呢？
原本我查維基以為是2
直到我看到真核的圖
http://i.imgur.com/FxTXSh7.jpg
那為什麼又變前正後負呢？
到底解螺旋酶怎麼作用的！？
感謝大家救救大一菜逼八嗚嗚
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