Tim nguyen nhan cua mot s6 bi€u hien & nguoi: Thu.. d ngiroi co mot s6 bi€u hien Nguyen nhan[r]
(1)soGIAO DVC vA DAo T~O TIENGIANG
BE THI CHINH THUC
KY THI CHON HOC SINH GIOI cAp HUYtN TRUNG HOC CO SO, NAM HOC 2018-2019 Mon: SINH HQC
Thai gian: 150 phut (khong kd thin gian giao d€) Ngay thi: 20/02/2019
(D€ thi eo 02 trang, g6m 07 cdu) Can 1: (2,0 didm)
Nhirng thong s6: IOAOva 34AO
hinh ve "Mo hinh cdu true khong gian ella mot doan phdn tic ADN" cho bi€t dieu gi?
c.au tn1(_;kbOQg_~ianCUBADN tbeo "'· Isuu~Crk:k
Cau 2: (3,0 diem)
Trong qua trinh nguyen phan cua t€ bao, d.u true di€n hinh cua nhiem sic th€ duoc bieu hien r6 nhfit&ki nao? M6 ta cfiutrue
Cau 3: (3,0 didm)
B6i nrong, nQidung vaynghia thirc ti~n cua di truyen h9C la gi? Cau 4: (3,0 didm)
4.1 Tim nguyen nhancua mot s6 bi€u hien&nguoi: Thu
dngiroi co mot s6 bi€u hien Nguyen nhan
tv'
(1) Benh h6ng cfiuhinh lucriliem . .
(2) Benh bach tang . . .
(3) B~nh Bao .. . ... .. .
(4) Benh mau kho dong,benh mil mau . . . .
4.2 Cho biet:
BQt bien gen la gi? T~i dQtbi€n gen thuOng co h~i cho ban than sinh v~t?
(2)Can 5: (3,0 tJiim)
Phan biet thirong bien voi d()t bien v€: Khai niem; nguyen nhan; bi6u hien; tinh di truyen; IQ'i ich va y nghia
Can 6: (3,0 tJiim)
Hay giai thich thi nghiem cua Mooegan v€ S1,l'di truyen lien ket dua tren eo sat€ bao hoc,
Can 7: (3,0 diim)
Gen D eo tAng s6 nucleotit la 2400 nu va eo tAng s6 nucleotit loai T va s6 nucleotit loai A la 60% tAng s6 nucleotit cua gen Gen nhan doi mot s6 IAn lien ti€p va moi tnrong n()i bao da eung eAp10800 nucleotit loai A
4.1 Tinh s6 IUQ'Ilgtirng Ioai nucleotit cua gen D 4.2 Tinh s6 lien ket hydro cua gen D
4.3 Tinh s6 IAnnhan doi cua gen D
II~T
-Thi sinh khong dU'(lcsiCd{lng tai li?u Can hpcoi thi khong giai thich gi them.
HQvaten thi sinh: S6 bao danh: