$($b$)$ Of the samples applied to the six lanes on the paper in the animation $($i$.$e$.,$ samples $1,2,3,4,5,$ or $6),$ which two have the same composition, and what is the composition of those two samples $($i$.$e$.,$ what components, as best as you can describe them, are present in the two samples$)?$ Briefly explain how you know.

The red dots.