ÌâÄ¿ÄÚÈÝ
12£®ÈçͼA¡¢BÊÇijÖÖ»ùÒòÐÍΪAaBbµÄ¶¯Îïϸ°û·ÖÁÑʾÒâͼ£¬C±íʾ¸Ã¶¯Îïϸ°û·ÖÁѲ»Í¬Ê±ÆÚºËDNAÊýÁ¿±ä»¯Çé¿ö£®Çë¾Ýͼ»Ø´ðÎÊÌ⣮£¨1£©Aϸ°ûÖк¬ÓÐ4¶ÔͬԴȾɫÌ壬¸Ãϸ°ûËù´¦µÄ·ÖÁÑʱÆÚΪÓÐË¿·ÖÁѺóÆÚ£®
£¨2£©Bϸ°ûÖÐȾɫÌå¢ÙÉÏ»ùÒòBÓë»ùÒòb·ÖÀë·¢ÉúÔÚCͼµÄfg½×¶Î£®È¾É«Ìå¢ÙÉϵĻùÒòbÐγɵÄÔÒò¿ÉÄÜÊÇ»ùÒòÍ»±ä£®
£¨3£©ÈôDͼ×ø±êÖÐȾɫÌåÊýÓëºËDNAÊýÖ®±Èy1¡¢y2·Ö±ðΪ1¡¢0.5£¬ÇëÔÚDͼ×ø±êÖл³ö¸Ã¶¯Îïϸ°ûÕý³£¼õÊý·ÖÁѹý³ÌÖС°È¾É«ÌåÊýÓëºËDNAÊýÖ®±È¡±±ä»¯ÇúÏßͼ£®
·ÖÎö ·ÖÎöAͼ£ºÍ¼Aϸ°ûº¬ÓÐͬԴȾɫÌ壬ÇÒ×ÅË¿µã·ÖÁÑ£¬´¦ÓÚÓÐË¿·ÖÁѺóÆÚ£»
·ÖÎöBͼ£ºÍ¼Bϸ°ûº¬ÓÐͬԴȾɫÌ壬ÇÒͬԴȾɫÌåÁª»áÐγÉËÄ·ÖÌ壬´¦ÓÚ¼õÊýµÚÒ»´Î·ÖÁÑÇ°ÆÚ£»
·ÖÎöCͼ£ºÍ¼C±íʾ¸Ã¶¯Îïϸ°û·ÖÁÑʱÆÚºËDNAÊýÁ¿±ä»¯ÇúÏߣ¬ÆäÖÐdµã֮ǰ±íʾÓÐË¿·ÖÁѹý³ÌÖÐDNAº¬Á¿±ä»¯¹æÂÉ£¬¶ødµãÖ®ºó±íʾ¼õÊý·ÖÁѹý³ÌÖÐDNAº¬Á¿±ä»¯¹æÂÉ£®
½â´ð ½â£º£¨1£©Aϸ°û´¦ÓÚÓÐË¿·ÖÁѺóÆÚ£¬´Ëʱϸ°ûÖÐ×ÅË¿µã·ÖÁÑ£¬½ãÃÃȾɫµ¥Ìå·Ö¿ª³ÉΪȾɫÌ壬ÔÚ·Ä´¸Ë¿µÄÇ£ÒýÏÂÒÆÏòϸ°ûÁ½¼«£»¸Ãϸ°ûº¬ÓÐ4¶ÔͬԴȾɫÌ壮
£¨2£©È¾É«Ìå¢ÙÉÏ»ùÒòBÓëÍ»±ä»ùÒòbµÄ·ÖÀë·¢ÉúÔÚ¼õÊýµÚ¶þ´Î·ÖÁѺóÆÚ£¬¼´CͼµÄf¡úg½×¶Î£®ÓÉÓÚȾɫÌå¢ÚÉ϶¼ÊÇb»ùÒò£¬Òò´ËȾɫÌå¢ÙÉϵĻùÒòbÐγɵÄÔÒò¿ÉÄÜÊÇ»ùÒòÍ»±ä£®
£¨3£©¼õÊýµÚÒ»´Î·ÖÁѼäÆÚ£¬Ï¸°ûÖнøÐÐȾɫÌåµÄ¸´ÖÆ£¬Òò´ËȾɫÌåÊýÓëºËDNAÊýÖ®±ÈÓÉ1±äΪ$\frac{1}{2}$£»¼õÊýµÚÒ»´Î·ÖÁÑ¡¢¼õÊýµÚ¶þ´Î·ÖÁÑÇ°ÆÚ¡¢ÖÐÆÚ£¬Ï¸°ûÖÐȾɫÌåÊýÓëºËDNAÊýÖ®±È±£³Ö²»±ä£¬¼´$\frac{1}{2}$£»¼õÊýµÚ¶þ´Î·ÖÁѺóÆÚ£¬×ÅË¿µã·ÖÁÑ£¬È¾É«ÌåÊýÓëºËDNAÊýÖ®±ÈÓÉ$\frac{1}{2}$±äΪ1£¬Ö±ÖÁ¼õÊý·ÖÁѽáÊø£®Òò´Ë£¬¸Ã¶¯Îïϸ°ûÕý³£¼õÊý·ÖÁѹý³ÌÖÐȾɫÌåÊýÓëºËDNAÊýÖ®±ÈµÄ±ä»¯ÇúÏßͼÈçÏ£º
£®
¹Ê´ð°¸Îª£º
£¨1£©4 ÓÐË¿·ÖÁѺóÆÚ
£¨2£©fg »ùÒòÍ»±ä
£¨3£©Èçͼ
µãÆÀ ±¾Ìâ½áºÏϸ°û·ÖÁÑͼºÍÇúÏßͼ£¬¿¼²éÓÐË¿·ÖÁѺͼõÊý·ÖÁѵÄÏà¹Ø֪ʶ£¬ÒªÇó¿¼Éúʶ¼ÇÓÐË¿·ÖÁѺͼõÊý·ÖÁѲ»Í¬Ê±ÆÚµÄÌص㣬ÕÆÎÕÓÐË¿·ÖÁѺͼõÊý·ÖÁѹý³ÌÖÐDNAº¬Á¿±ä»¯¹æÂÉ£¬ÄÜ׼ȷÅжÏͼÖи÷ϸ°ûµÄ·ÖÁÑ·½Ê½¼°Ëù´¦µÄʱÆÚ£¬×¼È·ÅжÏÇúÏßͼÖиöÇø¶ÎËù´ú±íµÄʱÆÚ£¬ÔÚ½áºÏËùѧµÄ֪ʶ´ðÌ⣮
A£® | ÿ¸öDNA·Ö×ÓÒ»°ã¶¼º¬ÓÐËÄÖÖÍÑÑõºËÜÕËá | |
B£® | ÿ¸öDNA·Ö×ÓÖеļî»ù¡¢Á×Ëá¡¢ÍÑÑõºËÜÕËá¡¢ÍÑÑõºËÌǵÄÊýÄ¿ÊÇÏàµÈµÄ | |
C£® | DNA·Ö×ÓÖеÄÿ¸öÍÑÑõºËÌÇÉϾùÁ¬×ÅÒ»·Ö×ÓÁ×ËáºÍÒ»·Ö×Ó¼î»ù | |
D£® | ÔÚÒ»¸öË«Á´DNA·Ö×ÓÖеÄƬ¶ÎÖУ¬ÏÙàÑßÊÊýÓëÐØÏÙà×à¤ÊýÒ»°ãÊÇÏàͬµÄ |
A£® | ϸ°ûÊÇÉúÃüϵͳÖÐ×î»ù±¾µÄ½á¹¹²ã´Î£¬·Ö×Ó¡¢Ô×ӵȲ»ÊôÓÚÉúÃüϵͳµÄ½á¹¹²ã´Î | |
B£® | Éú̬ϵͳÊÇÉúÃüϵͳµÄ½á¹¹²ã´Î£¬Éú̬ϵͳ°üÀ¨ÉúÎïÒòËغͷÇÉúÎïÒòËØ | |
C£® | ϸ°ûѧ˵ʹÈËÃǶÔÉúÃüµÄÈÏʶ½øÈëµ½·Ö×Óˮƽ | |
D£® | ϸ°ûѧ˵ÊÇÊ©À³µÇºÍÊ©ÍúÔÚ×ܽáÇ°È˵ijɹûµÄ»ù´¡ÉϽáºÏ×Ô¼ºµÄÑо¿µÃ³öµÄ |
A£® | Ö»ÄÜÔÚϸ¾úµÄDNAºÍµ°°×ÖÊÖÐÕÒµ½32PºÍ35S | |
B£® | ×Ó´úÊɾúÌåµÄDNAºÍµ°°×ÖÊÒ»¶¨¾ßÓзÅÉäÐÔ | |
C£® | DNA¾ßÓзÅÉäÐÔµÄ×Ó´úÊɾúÌåÕ¼$\frac{1}{32}$ | |
D£® | ¿ÉÍƲâÊɾúÌå·±Ö³Ò»´úµÄʱ¼äԼΪ1.0Сʱ |
A£® | ¿ÉÒÔÀûÓø߱¶ÏÔ΢¾µ¹Û²ì°ÍÊÏСÌåµÄÓÐÎÞ£¬È·¶¨Ã¨µÄÐÔ±ð | |
B£® | Èô³öÏÖºÚ»ÆÏà¼äµÄ´Æ裬Æä»ùÒòÐÍ¿ÉÄÜÊÇXAXa | |
C£® | Õý³£ÐÛèÖÐÒ²¿ÉÄܳöÏÖºÚ»ÆÏà¼äëɫµÄ¸öÌå | |
D£® | »ÆÉ«´ÆèÓëºÚÉ«ÐÛèÔÓ½»²úÉúµÄºó´ú£¬¿É¸ù¾ÝëɫÅжÏÆäÐÔ±ð |