sex-linkage

[seks-ling-kij]

noun Genetics.

an association between genes in sex chromosomes such that the characteristics determined by these genes appear more frequently in one sex than in the other.

Origin of sex-linkage

First recorded in 1910–15

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

The F2 ratio in table 21 is evidently the 2:1:1 ratio typical of sex-linkage, but with the bow males running behind expectation.
Sex-linked Inheritance in Drosophila
Thomas Hunt Morgan