What is the approximate percentage of guanine in the DNA genome of E. coli?

25%

Explanation:

The approximate proportion of G + C content in the genome of E. coli has been reported to be 50%. According to Chargaff's rule, the amount of guanine in any DNA must be approximately equal to the amount of cytosine. Hence,

if G + C = 50 and G = C,

then

G = C = 25

Therefore, the approximate percentage of guanine in the genome of E. coli would be 25.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

the answer is d. none of the above