Table 3 Numbers of species pairs tested since 1996 in which explanatory theories for Haldane's Rule have been explicitly invoked

From: Haldane's rule in the 21st century

 

Dominance

Faster male

Faster heterogametic sex

Faster X (or Z)

X–Y (or W–Z) interactions

X (or Z)-autosome interactions

Male heterogametic

12

7

1

6

2

4

Female heterogametic

70

0

34

1

0

1

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