Thinking about the scrap of Mendelian theory Picked up in high-school: blue eyes recessive, brown dominant: Therefore blue-eyed parents cannot produce A dark-eyed child, the dark-eyed-producing element Is lacking in them. If it were present in either, That one would be dark-eyed, for dark eyes are dominant. In Tim Hunt (ed.)

The Collected Poetry of Robinson Jeffers (Volume 2), Such Counsels You Gave to Me (p. 568)