1 . repeat => to repeat 

2 . by => with

Xét gen I : 

có hiệu giữa G với 1 loại khác là 10%

Ta có G-A= 0,1xN và G+A=0,5xN

Suy ra A=T=0,2N , G=X=0,3N 

Số liên kết H=2A+3N=2×0,2×N+3×0,3×N =1,3xN =3120 suy ra N=2400 Nu

Vậy A=T=480 , G=X=720

Mạch 1 gen có : 

A1=15%×1200=T2=180

T1=A2=300

G1=X1=420

G1=X2=300

Xét gen 2 

A=T=480-120=360

Mà H=2A+3G=3120 suy ra G=800

Số Nu của 1 mạch là 800+360=1160

A1=0,15×1160=174=A2

T1=A2=360-174=186

G1=X2=0,35×1160=406

X1=G2=800-404=396 Nu

Giúp em :
40 . The truck is practically as cheap as the van ( LITTLE )

=> The truck _____________________________________

1 . C

2 . C

3 . C

4 . D

5 . B

6 . D

7 . B

8 . B

9 . D

10 . D

1 . unhappy

2 . strong

3 . completely

4 . belief

1 . will go

2 . hasn't made

3 . was cooking

4 . moved

1 . If Andrew had a camera , he could take a photo.

2 . She asked me to tidy my room.

3 . We were driven into town by a very friendly taxi driver.

4 . There was too much food that I couldn't finish it.

1 . online

2 . from

3 . kind

4 . really

1 . D

2 . F

3 . C

4 . E

5 . B

6 . A