Fig. 1
From: Mendel’s terminology and notation reveal his understanding of genetics
Mendel's explanation of the way that different germinal cells combine. The figure copies diagrams presented by Mendel in his 1866 paper. The ellipsis represents the following text, not included in the figure: “The result of the fertilization may be made clear by putting the signs for the conjoined egg and pollen cells in the form of fractions, those for the pollen cells above and those for the egg cells below the line. We then have.” (p30)