I. MUC TIEU 1 Kien thiifc
3. Lieu phap gen KT thuat ciia tuong la
Hogt dpng cda GV - GV nhan xet, danh gia
va yeu cdu HS khdi qudt kidn thflc.
Hogt dpng cua HS
- GV hdi:
+ Lieu phdp gen gap khd khan gi?
+ Tai sao lieu phdp gen la kT thuat cua tflong lai?
Npi dung
- HS nghien cflu SGK
trao ddi nhdm tra ldi dugc.
+ Khd khan: Khi chen gen lanh vao he gen cua ngudi, vi rut cd the gay hu hdng cdc gen khdc. + Lieu phap gen cdn phai hoan thien them mdt sd khau trudc khi dp dung dai tra cho ngudi benh.
* Khai niem: Lieu phap gen la cac thao tac dugc thuc hien tren gen bdng kT thuat di truyen nhdm lam thay ddi cafl true di truyen cua gen.
* Quy trinh
- Tach td bao dot bidn ra khdi benh nhan.
- Cac ban sao binh thudng cua gen dot bien dugc gai vao vi rut rdi dua vao cac td bao dot bie'n d tren.
- Chgn cac ddng td bao cd gen binh thudng ldp dung thay thd cho gen dot bidn rdi dua trd lai ngudi benh.
Hogt dpng 2
MOT SO VAN D £ C U A DI TRUYEN HOC
Muc tieu: HS chi ra dugc nhflng mat tfch cue va tieu cue cd thd xay ra vdi loai ngudi khi ap dung nhflng kT thuat cao.
Hogt dpng cda GV - GV neu van dd:
+ Viec giai ma he gen ngudi ngoai nhung lgi fch thie't thuc cdn gay tam If lo ngai gi?
+ Lay vf du minh hoa.
- GV nhan xet, danh gia va bd sung kidn thflc.
•
Hogt dpng cda HS - HS trao ddi nhdm:
+ Van dung hieu bidt thuc te.
+ Tim hieu thdng tin tfl sach bao.
+ Chi ra mdt vai trudng hgp ve di truyen anh hudng de'n hdn nhan. VD: Ngudi mde hdi chflng Dao, hgi chflng Tacno anh hudng tdi hdn nhan.
- Ung thu bao trudc cai chdt anh hudng tdi cugc sd'ng.
- Dai dien HS trinh bay
-^ ldp nhan xet.
Npi dung
1. Tac dgng xa hgi ciia viec giai ma bg gen ngudi
va'n dd tam If xa hdi vd viec giai ma bg gen ngudi.
+ Hidu bidt vd hd so di truydn cua mdi ca nhan cd cho phep trdnh dugc benh tat di truyen hay chi dan thudn thdng bao vd cai chdt sdm cd the xay ra va khdng the tranh khdi.
Hogt dpng cda GV Hogt dpng cda HS Npi dung
- GV neu vdn dd: Cdng
nghe gen va cdng nghe td bao da phat sinh
nhiing vdn di gi?
- GV nhan xet, ddnh gia va giang giai:
+ Trong nghien cflu va san xuat khdng trdnh khdi rui ro, tac hai.
+ Ban than cac thanh tuu khoa hgc la vd hai, van de la con ngudi sfl dung vdi muc dfch nao? + Nhidu nha san xudt lgi dung cdng nghe sinh hgc dd tao san pham chuydn gen khdng qua kidm soat.
+ Cac boat ddng san xudt cd lien quan ddn cdng nghe sinh hgc cdn
- HS van dung kidn thflc va hidu bidt thuc td de trao ddi nhanh trong nhdm va tra ldi.
+ San pham tfl sinh vat bidn ddi gen cd the chua hoan toan tdt cho con ngudi.
+ Gen khang thudc diet
CO.
+ Nhan ban vd tfnh d ngudi.
+ Hd so di truydn cua mdi ngudi ed thd anh hudng tdi hdn nhan va xin viic lam.
2. Van de phat sinh do cdng nghe gen va cdng nghe te bao
- Gen khang thudc khdng sinh tfl sinh vat bidn ddi gen eg the phat tan sang vi sinh vat gay benh cho ngudi hay khdng.
- Sfl dung san phdm tfl sinh vat bidn ddi gen cd an toan cho sflc khoe con ngudi va anh hudng tdi he gen cua ngudi hay khdng.
- Lo ngai vd viec sfl dung nhan ban vd tfnh de tao ra ngudi nhan ban se'ma't hdt gia trj truyen thd'ng (vd tinh mdu tfl).
Hogt dpng cda GV
dugc kiem soat bdi phap chd nha nudc va bdi du luan.
- GV ddn ddt:
+ Nhung nam gdn day Di truyen hgc, Tam If hgc, Xa hdi hgc kdt hgp nhidu nganh khoa hgc khac da tflng budc lam rd CO sd di truydn va anh hudng cua mdi trudng ddi vdi trf thdng minh. + Cbl so thdng minh (IQ) ngay cang dugc flng dung rdng rai. - Gy dat van de: IQ la gi? Lien quan gifla IQ va su di truyen?
- GV nhan xet, danh gia va giang giai.
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Hogt dpng cua HS
- HS nghien cuu SGK va
tu lieu dd trao ddi nhdm va tra ldi -> ldp nhan xet bd sung.
Npi dung