function BAD_fret=BAD_selektor(mixedFRET, badfret)
k=1;
f=1;
while k<length(badfret)+1
    if badfret(k)==f
     BAD_fret(1:2,k)=mixedFRET(1:2,f);
        k=k+1   
        f=f+1
    else
        f=f+1
    end

end