They are then recessive thymocentrics.
"The Glands Regulating Personality"
Louis Berman, M.D.
Also, that when unit factors, say of the color of the eyes, come into conflict, brown or black being mixed with blue or grey, one, the recessive, is submerged and overlaid but not destroyed by the other, the dominant.
"The Glands Regulating Personality"
Louis Berman, M.D.
Since no "pinks" appeared the color is recessive, and the brother was not heterozygous for it.
"Sex-linked Inheritance in Drosophila"
Thomas Hunt Morgan Calvin B. Bridges