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ÎÒÊÇ×ö·ÂÉúµç·½»²æÑ§¿Æ£¬ÔÚJournal of Royal society InterfaceÉÏ·¢ÏÖһƪÎÄÕ£¬ÓÐÒ»¶ÎÂÛÊöÖУ¬Ìáµ½ÁËdegeneracy£¬Çë¸÷λָµ¼£¬ÔÚÉúÎïѧÁìÓò£¬Ó¦¸ÃÔõÑù·Òë´ËÃû´Ê£¬Ìáǰл¹ý£¡ ×£Ó¦Öú¡¢Â·¹ýºÍ¶¥ÌûµÄºÃÐÄÈË£¬ÐÄÏëʳɣ¬Ò»Ë³°Ù˳£¡ Ps£ºÏà¹ØÂÛÊöEvolved natural systems are known to display some sort of distributed robustness against the loss of individual components. Such type of robustness is not just the result of redundancy. Instead, it seems to be based on degeneracy, i.e. the ability of elements that are structurally different to perform the same function or yield the same output. |
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degeneracyÊÇÖ¸¼ò²¢ÐÔ£¬¼´²»Í¬µÄ½á¹¹ÐÐʹÏàͬµÄ¹¦ÄÜ¡£ÈçÃÜÂë×Ó¼ò²¢ÐÔ£º²»Í¬µÄÃÜÂë×Ó±àÂëͬһ°±»ùËá¡£ÔÎÄ·Ò룺½ø»¯ºóµÄ×ÔȻϵͳչÏÖ³öijÖÖ·ÖÅäµÄ»îÐÔ£¬¶ø²»Êǵ¥¸ö×é³ÉÔª¼þµÄɥʧ¡£ÕâÖÖÀàÐ͵ĵĻîÐÔ²»½ö½öÊÇÓÉÓÚÈßÓàÔì³ÉµÄ£¬Ïà·´£¬ËüÊÇ»ùÓÚ¼ò²¢ÐÔÔÔò£¬¼´½á¹¹²»Í¬µÄÔª¼þ¾ßÓÐÐÐʹÏàͬ¹¦ÄÜ»òÕß²úÉúÒ»Ö½á¹ûµÄÄÜÁ¦¡£ Ï£Íû¶ÔÄãÓÐÒ»¶¨°ïÖú¡£ |

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Within biological systems, degeneracy refers to circumstances where structurally dissimilar components/modules/pathways can perform similar functions (i.e. are effectively interchangeable) under certain conditions, but perform distinct functions in other conditions. Degeneracy is thus a relational property that requires comparing the behaviour of two or more components. In particular, if degeneracy is present in a pair of components then there will exist conditions where the pair will appear functionally redundant but other conditions where they will appear functionally distinct. ¼ò²¢ÐÔ£¨degeneracy£©£ºÈç¹û¼¸¸ö²»Í¬Á¿×ÓÊýµÄÁ¿×Ó̬¾ßÓÐÏàͬµÄÄÜÁ¿£¬Ôò³ÆËüÃÇÊǼò²¢µÄ¡£ ¼ò²¢ÐÔ£¨degeneracy£©:ÃÜÂë×Ó¹²ÓÐ64¸ö£¬³ýÁË3¸öÖÕÖ¹ÃÜÂë×ÓÍ⣬ÆäÓà61¸öÃÜÂë×Ó´ú±í20ÖÖ°±»ùËᣬ³ýÁËTrp ºÍMet¸÷ÓÐ1 ¸öÃÜÂë×ÓÍ⣬ÆäËü18ÖÖ°±»ùËá¾ùÓÐ2¸ö»ò¶à¸öÃÜÂë×Ó£¬ÃÜÂë×ÓÖÐÓÐÒ»¸öºËÜÕËá¿ÉÒÔÊDz»Í¬µÄ£¬Õâ³ÆÎªÃÜÂë×ӵļò²¢ÐÔ¡£ÃÜÂë×ӵļò²¢ÐÔ²»ÊÇËæ»úµÄÖ÷ÒªÊÇÓɵÚÈýλµÄ¼î»ù°Ú¶¯Ôì³ÉµÄ£¬È縬°±ËáµÄ4 ¸öͬÒåÃÜÂë×Ó£¨CCU¡¢CCC¡¢CCA¡¢CCG£©£¬5£§-¶ËµÄ2 ¸ö¼î»ùÏàͬ£¬²»Í¬µÄÊÇ3£§-¶ËµÄ¼î»ù¡£5£§¶ËµÄ2¸ö¼î»ù¾ö¶¨ÃÜÂë×ÓµÄÌØÒìÐÔ¡£ÕâÊÇÒâζ×ŵÚÈýλ¼î»ù°Ú¶¯¿ÉÒÔ²»Ó°ÏìÕý³£µÄ·Òë¡£ÃÜÂë×Ó¼ò²¢ÐÔºÍËüµÄÌØÊâÅÅÁУ¬¶ÔÓÚ·Àֹͻ±äµÄÓ°Ï죬±£Ö¤ÖÖÊôÎȶ¨ÐÔÓÐÒ»¶¨ÒâÒå¡£ ¼ò²¢£¨Degeneracy£© ÔÚÎïÀíѧÖУ¬×÷ΪÁ¿×ÓЧӦµÄ¼ò²¢ÊÇÓëÎïÖʵÄÎïÀíÌØÐÔÃÜÇÐÏà¹ØµÄÒ»¸öÖØÒª¸ÅÄî¡£ ÎïÀíѧÖеļò²¢ÊÇÖ¸Á½¸öÒÔÉϵÄÎïÀí״̬´¦ÓÚÏàͬÄÜÁ¿£¨Äܼ¶£©µÄÒ»ÖÖÏÖÏó¡£ |
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