A sample of Chargaff's data on the DNA base composition in various species is provided. Discuss several conclusions that may be drawn from this data.SPECIESATGCHuman31.031.519.418.4Fruit fly27.327.622.522.5Corn25.625.324.524.6Neurospora (fungus)23.023.327.126.6E. coli (bacterium)24.624.325.525.6
What will be an ideal response?
Answers may vary. Several conclusions may be drawn from this data. The nucleotide content of DNA is not fixed. The percentage of the bases are not all equal, at 25%, and the base composition varies with different species. In each species, the percentage of A = T and the percentage of G = C.
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