a)
a/N=576000:300=1920nu
Ta có:X=G=>A-G=20%
Theo NTBS:A+G=50%
=>%A=%T=35%
%G=%X=15%
=>A=T=672nu
G=X=288nu
\(a,\) \(N=\dfrac{M}{300}=1920\left(nu\right)\)
\(\Rightarrow20\%N=384\left(nu\right)\)
Theo bài ta có hệ : \(\left\{{}\begin{matrix}2A+2G=1920\\A-G=384\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}A=T=672\left(nu\right)\\G=X=288\left(nu\right)\end{matrix}\right.\)
\(b,\) \(\left\{{}\begin{matrix}H=2A+3G=2208\left(lk\right)\\L=\dfrac{3,4.N}{2}=3264\left(\overset{o}{A}\right)\end{matrix}\right.\)
Tk:
a/N=576000:300=1920nu
Ta có:X=G=>A-G=20%
Theo NTBS:A+G=50%
=>%A=%T=35%
%G=%X=15%
=>A=T=672nu
G=X=288nu
b/N=2A+2G=2.672+2.288=1920
=>l=N/2.3,4=3264
H=2A+3G=2.672+3.288=2208
mk ko bt đr ko nha
a/N=576000:300=1920nu
Ta có:X=G=>A-G=20%
Theo NTBS:A+G=50%
=>%A=%T=35%
%G=%X=15%
=>A=T=672nu
G=X=288nu
b/N=2A+2G=2.672+2.288=1920
=>l=N/2.3,4=3264
H=2A+3G=2.672+3.288=2208