The Semigamy mutant of cotton (Gossypium barbadense L.) was first reported in 1963, and was notable for its very high production of monoembryonic haploids, and haploid-haploid (maternal-paternal) and haploid-tetraploid chimeras. Se-generated chimeras have been used in a variety of ways. They have been used to mark the production of cytoplasmic substitution lines, and to identify haploids of F1 interspecific hybrids produced via a female with the Semigamy trait, to construct a fate map of the shoot apex by clonal analysis, to examine cotton leaf morphogenesis to determine allelic and interlocus interactions, and as an assay for parental traits. In this study the expression of the parents on the leaves of chimeras have been examined. I have used three semigamous lines in reciprocal crosses and measured their effects on chimeric distributions, using leaf color to evaluate the extent of distribution and categorize the sector according to genotype.