Table 1 Genomic composition of offspring from reciprocal crosses between two ‘lines’ (i.e., inbred lines, populations or species), designated as types A and B

From: The quantitative genetics of sexual dimorphism: assessing the importance of sex-linkage

Male parent

Female parent

 

♀A

♀B

♂A

XAXAAAa

X A X B AB

 

XA0AA

X B 0AB

♂B

X A X B AB

XBXBBB

 

X A 0AB

XB0BB

  1. Within each cell the top line shows the composition of the homogametic sex and the bottom line shows the composition of the heterogametic sex (X0 in this case). Males shown in bold have sex chromosomes derived from different lines and hence demonstrate X-linkage. However, they also differ in the source of their maternal chromosomes. Differences between these males could therefore be due to both sex-linkage and maternal effects. Females shown in italics have the same genomic composition but differ in the source of their maternal chromosomes and hence differences between these females reveal maternal effects.
  2. aSource of X chromosomes (e.g., XA from a type A parent) and autosomes (e.g., AB means one half derived from a type A parent and one half from a type B parent).
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