On the Inheritance of Cosmos

Abstract

1. In the present paper, we mentioned the behavior of the following factors in Cosmos:
C, c-The factor C concerns the production of color in the flower.
S, s-In the coexistence of C and S, the flower assumes full coloration such as crimson or pink, but when the former factor is replaced by its recessive mate the result is a shaded flower.
I, i-In addition to C and S, the presence of I makes the flower crimson in color, while its recessive factor results in a pink flower.
E, e-The allelomorphs are responsible for the alternative conditions of the eye, dark and light.
P, p and Q, q-P and Q act complementally in the production of a“doublering” pattern. Neither factor can produce the pattern by itself.
Y, y-The yellow pollen carries the factor Y, while the manifestation of white pollen is due to its recessive factor.
B, b-The factor b is responsible for the bracteody of flower.
2. The factor i links with p, the frequency of crossing over being 6.13%.