I. MỤC TIÊU: Học sinh cũng cố kiến thức cấu trúc và chức năng của ADN, ARN Hiểu được cơ chế di truyền ở cấp phân tử. Vận dụng giải bài tập.II. PHƯƠNG PHÁP: Trực quan, thảo luận. III.PHƯƠNG TIỆN: GV: Bài soạn của giáo viên. HS: Ôn lại kiến thức ADN, ARN, prôtêin đã học
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NST khỏc sinh sn cua sinh vt dựng chuyn gen t 1 NST cua loai nay -> loai khỏc RT KINH NGHIM - Ngy son: 08/09/2013 Tit theo PPCT: 07 Bai 6 T BIN S LNG NHIM SC TH I Muc tiờu 1 Kin thc - Hc sinh nờu khai nim t bin NST Trang: 16 Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K - Phõn bit oc c im cua 4 dng t bin cõu truc - Hc sinh trinh bay c nguyờn nhõn c ch phỏt sinh, hu...Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K - Lu ý: Nu b ba m u (AUG) hoc b ba kt thuc (UAG) b mõt mt cp Nu khụng tng hp Pr hoc kộo dai s tng hp * Hot ụng 3: - Giỏo viờn cho hc sinh nghiờn cu hinh 4.1 va 4.2 tho lun ? Phõn bit tỏc nhõn t bin vi cỏch thc tỏc ng ? Hu qu ? ? Gii thich c ch phỏt sinh t bin gen ? - Hc sinh lõy vi d va gii thich c c ch phỏt sinh t bin gen do... u mt cỏnh va th + Cho hc sinh xem bng s lng nhau eo s cõp, kốm NST cua mt s loai sinh vt, hi: ti o co tõm ng T bao cua mụi loai sinh vt co ? B NST cua cỏc loai sinh vt la im trt cua b NST c trng v s lng khỏc nhau co ging nhau khụng? NST trờn dõy vụ hinh thỏi va cõu truc, c duy Cho vi d ? sc chia NST thanh tri n nh qua cỏc th h ? B NST cua loai c c trng 2 cỏnh + Trong t bao sinh dng bi nhng yu t nao... Hot ụng 4: Giỏo viờn cho hc sinh c - Hc sinh c mc III mc III ? Khi nao t bin biu hin ra kiu hinh ? VD: Trờn mt canh cõy hoa giõy co canh hoa trng xen k cnh hoa => t bin nay phỏt sinh nh th nao ? c di truyn khụng ? - t bin gen gõy ri lon ? t bin co vai tro nh th trong quỏ trinh sinh tng Trang: 11 Thay th 1 cp nuclờụtit o v tri 1 cp nuclờụtit xy ra trong 1 hay 1 s II C CH PHT SINH T BIN GEN: 1 S kt cp... KINH NGHIM - Ngy son: 02/09/2013 Tit theo PPCT:06 Bai 5 NHIM SC TH V T BIN CU TRC NHIM SC TH I Muc tiờu 1 Kin thc Trang: 12 Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K Nờu c im khỏc nhau gia vt chõt di truyn cua sinh vt nhõn s va sinh vt nhõn chun 2 K nng - Phỏt trin nng lc quan sỏt, phõn tich, so sỏnh, khỏi quỏt hoỏ - Rốn k nng lam vic c lp vi sỏch giỏo khoa 3 Thỏi... 1) Cho hc sinh nghiờn cu mc Hp t (2n + 2) th a II.3 va II 4 nhim Trang: 18 ? t bin th lch bi co hu 3 Hu qu: Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K IV CNG C: - Nờu tom tt c ch phỏt sinh th a bi, d bi bng s ụ - So sỏnh s khỏc nhau gia c th lng bi va c th a bi thc vt - Th d bi va th a bi ging, khỏc nhau nh th nao ? Ti sao ngi ta khuyờn ph n trờn 35 tui khụng nờn sinh con ... mi: Trang: 19 Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K Hụm nay chung ta cựng thc hanh quan sỏt s lng NST HOT NG GIO VIấN HOT NG HC SINH Gv nờu mc ich yờu cu cua ni dung thi nghim Hng dn: Hc sinh lng nghe va c tiờu bn trờn kinh hin vi va xem giỏo viờn lam mu nhin t ngoai vao( cha qua th kinh) iu chnh cho vựng co mu vt trờn tiờu bn vao gia vựng sỏng Hc sinh thc hanh: Quan sỏt... i chụ vi 1 Giỏo ỏn Sinh hc 12 c bn Giỏo viờn: Nguyn Cnh Hiu Trng THPT Tõn K * Hot ụng 3: - Giỏo viờn: Cho hc sinh c mc II.2 ? Th nao la hin tng hoỏn v gen ? ? S hoỏn d xy ra co quan h gi vi khong cỏch tng i cua cỏc gen trờn NST ? - Hc sinh gii thich, sau o giỏo viờn b sung ? 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