Bai 19: Mot gen cau true dai 0,408Mm. Do dot bien thay the mot cap nucleotit
bang mot cap nucleotit khac tai vi tri nucleotit thuf 363 da lam cho ma bo ba tai day trd thanh ma khong quy dinh axit amin nao.
Hay cho biet phan tijf protein do gen dot bien tdng hdp c6 bao nhieu axit amin.
A) 119. • B)117. C)118. D)120. Bai 20: Neu the he F, tu" boi la $ Aaaa x AAaa, trong trirdng hdp binh thtfdng Bai 20: Neu the he F, tu" boi la $ Aaaa x AAaa, trong trirdng hdp binh thtfdng
thi ti le kieu gen d ¥2 nhuf the nao:
A) lAAAA : 8Aaa : 18AAaa : 8Aaaa : laaaa. ^ B) laaaa : 18AAaa : 8Aaaaa : lAAaa. B) laaaa : 18AAaa : 8Aaaaa : lAAaa.
C) laaaa : 8AAa : 8Aaaa : 18AAaa : lAAAA. » i-'
D) lAAAA : 8AAAa : ISAAaa : 8Aaaa : laaaa. > :.^\:.'c:My,f
Bai 21: Mot loai c6 bo NST lifSng boi ki hieu la AaBbDd. Sau khi bi dot bien di
boi c( cap NST Aa bo NST CO the la:
A) AAaBbDd hoac AaaBbDd. ' ' B) AbbDd hoac aBdDd hoac BbDd. B) AbbDd hoac aBdDd hoac BbDd.
C) AAaa BbDd hoSc AAAaBbDd hoac AaaaBbDd.
D) Tat ca cac triTdng hdp tren. ' ' Bai 22: Ti le kieu hinh 1 troi: 1 ISn la ket qua cua phep lai sau: ' ' •' Bai 22: Ti le kieu hinh 1 troi: 1 ISn la ket qua cua phep lai sau: ' ' •'
A) Aaaa x AAaa. B) Aaaa x AAAa. C) Aaaa x aaaa. D) Aaaa x Aaa. Bai 23: Cd the nao trong cac cd the mang cac kieu gen difdi day c6 the sinh ra 2 Bai 23: Cd the nao trong cac cd the mang cac kieu gen difdi day c6 the sinh ra 2
loai giao tu' binh thuTdng vdi ti le hlng nhau:
A) Cd the ttf boi mang kieu gen AAaa. • B) Cd the ti? boi mang kieu gen AAAa. ' ' „ B) Cd the ti? boi mang kieu gen AAAa. ' ' „
C) Cd the tam boi mang kieu gen Aaa.