Sex between the Races Lore?

[Rongway]

The game occasionally uses the word "humans" to refer to all of the player races collectively (and presumably Garleans, as well), which leads me to believe that the racial variants are similar to breeds of dogs - sometimes dramatically different in appearance, but all the same species and all technically interfertile. (I say technically because, while genetically compatible, sheer physical differences may make some pairings incompatible.)

This, though.

An even more extreme example of intraspecies morphological differences in the real world...the following vegetables are all the same species, Brassica oleracea, but have wildly differing forms.

• Kale
• Collard greens
• Gai-lan
• Cabbage
• Savoy
• Brussels sprouts
• Kohlrabi
• Broccoli
• Broccolini
• Broccoflower
• Broccoli romanesco
• Cauliflower
• Wild broccoli