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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 ? (sụma): cỏc NST tụn ti thanh ? S lng NST trong t bao sinh tng cp NST... 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 nao ? hp prụtờin, c bit la t bin cỏc gen quy nh cõu truc cỏc enzim cho nờn a s Trang: 11 II C CH PHT SINH T BIN GEN: 1 S... o hoc hoc mõt kh nng chn ging c vao 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 - Phõn bit oc c im cua 4 dng t bin cõu truc - Hc sinh trinh bay c nguyờn nhõn c ch phỏt sinh, hu qu vai tro va ý nghia cua cỏc dng t... 17/10/2013 Tit theo PPCT: 13 BI 12 DI TRUYN LIấN KT VI GII TNH V DI TRUYN NGOI NHN I MC TIấU: Hc sinh: - Nờu c mt s im sai khỏc nhau gia NST thng va NST gii tinh - Hiu c c ch nhim sc th xỏc nh gii tinh, t o gii thich c vi sao trong t nhiờn tuyt i a s trng hp, sinh vt sinh ra co s cỏ th c va s cỏ th cỏi trong loai xõp x nhau ( theo t l 1:1) - Khng nh c trờn NST X, Y cỏc loai sinh vt con co gen quy nh tinh... th gii tinh v cõu to va chc nng ? Giỏo viờn cho hc sinh quan sỏt s ụ xỏc nh gii tinh ngi - Trong t bao sinh dng (2n) cua sinh vt ngoai cỏc NST thng luụn tụn ti thanh tng cp tng ụng, con co nhng NST c bit, co th tng ụng hay khụng tng ụng tu theo gii tinh cua tng nhom loai gi la gii tinh Trang: 36 a/ Nhim sc th gii tớnh: - Trong t bao sinh dng (2n) cua sinh vt ngoai cỏc NST thng luụn tụn ti thanh tng... 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 Trang: 12 - Rốn k nng lam vic c lp vi sỏch giỏo khoa 3 Thỏi ụ - Nõng cao nhn thc ung n va khoa hc v gen va mó di truyn - - Hinh thanh thỏi yờu thich khoa hc tim toi nghiờn cu II THIT B DY HC PHNG PHP: - Bng s lng NST (2n) cua mt s loai sinh vt - S ụ bin i hinh thỏi... Hot ụng 1: ? Trong t bao sinh dng, b NST tụn ti nh th nao ? NST tụn ti thanh tng cp tng ụng 2n Giỏo viờn nờu vi d: NST cua Ruụi giõm 2n = 8, nhng co khi li gp 2n = 7, 2n = 9, 2n = 6, -> t bin lch bi ( d bi) ? 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