Compare your analysis based on observing and measuring the leafs to your analysis of DNA sequenses.
All the detail in the bottom

how many species are there?
how did the 2 complement each other?
in what ways one more effective than the other?

same age.
oak leaf 1:
length: 2.75 inches
DNA string shorter than other
30% DNA related to leaf 2
11 % DNA related to leaf 3
oak leaf 2:
length: 4.75 inches
DNA string same length with leaf 3
92 % DNA related to leaf 3
oak leaf 3:
length: 3.75 inches