Please click to enlarge.
Note what signs you see.
I (W. Wertelecki, M.D.) see a family history illustrating what Gregor Mendel interpreted and established the science of Genetics. Do you understand this pattern? Does it speak to you? Black squares are males affected by any number of disorders – the circles are females. The lines over the squares-circles are children that share parents and the lines under square circles concern produced pregnancies and their outcomes as male or females, affected or not.
Believe it or not, this sort of pattern is sufficient to assert that a leading emperor was illegitimate – apparently to this day patriotic historians either pretend to be blind or do not know what Mendel discovered.
PERSPECTIVES and CREDIT: This illustration is from the J. Warkany archive (called by many “the father of Teratology”). Many archived illustrations including the present were included in his classic comprehensive book on “Congenital Anomalies: Notes and Comments”. This actual family history is presented in a related gallery.