0.357um = 3570 A0
N = 3570/3,4*2 = 2100
A=T, G=X
A = G + 10%
A+A+A-10+A-10 = 100%
==> A=T = 30% = 2100*30/100 = 630 (nu)
G=X=30%-10%=20% = 420(nu)
T2-X2 =15%
==> (T+X)(T-X) = 15%
mà T+X= 50% ==> T-X =15%/50% = 0,3
(0.3+X)2 - X2 = 15% ==> 0,09 + 0,6X + X2 - X2 = 15%
0,09 + 0.6X =15% ==> X = 0,1 => 10 %
T = X + 30% = 40%
A=T = 2100*40/100 = 840 (nu )
G=X = 2100*10/100 = 210 (nu)