You have decided you want to see what you have in common with other species as far as your DNA goes. You were able to sequence the DNA in E. coli, a mouse, and your big brother's friend (a human). Using
Chargaff's rule, discover which two organisms have the most DNA in common.
Below is a chart of the different bases each organism has. Along the top of the chart, you will find the
base pair and the numbers underneath represent the percentages of those found in the organisms.
Organism
Adenine (A)
Thymine (T)
Guanine (G)
Cytosine (C)
E. coli
26.0
23.9
24.9
25.2
Mouse
29.2
29.4
21.7
19.7
Human
30.7
31.2
19.3
18.8
Which two organisms are most similar? Why do you think this?