What were four of Francis Galton's findings from his twin studies?

What will be an ideal response?

Answer: Galton's findings included: Twins often wore different colors as children so their parents could tell them apart: twins often used their similarity in appearance to pull pranks and then escape punishment by blaming each other; twins' interests and way of speaking were generally similar; and twins seemed to get ill at the same time without catching the illness from each other, suggesting that they had similar constitutions. The twins were not completely alike, however. Galton found that they often sang in different keys and their handwriting was usually distinct.