Not until the beginning of this century—was definite established about the mechanization of heredity, he goes on. Look for a moment at what you cannot inherit.
you are a drunkard, the son of a drunkard, your son cannot inherit drunkenness, but environment, precept and example can, and haired family), no matter what the other parent's colouring, the child will be almost certainly dark.
If grey or green eyes marry grey, green or blue eyes, baby's eyes will probably be grey or green, possibly blue (rarely brown). Where dark head (with lighter shades among others in his or her family) marries;—1. A similar dark type: child will probably be dark, but possibly some lighter shade.
2. Red: child's chance is equal dark or red-brown (slight possibility of bland).
3. Bland: child probably dark, possibly bland, rarely red.
It straight hair marries straight hair baby will have no curls. Kinky hair will always win through, and if a member of a curly-haired is decided by the father, not the mother.
In European countries and America twins appears once in every ninety births.
In "Japan, once in about 160 births.
Text read from the printed page and cleaned; old type leaves the occasional error.