What does the 0.1.1 mean in a signature?

I'm sure it has something to do with genetics, but I'm an idiot and can't figure it out. :P

1.0 equals male
0.1 equals female
0.0.1 means no idea
1.1 means one male and one female

I'm sure you can figure the combos out from there. Hope this helps.

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Thank you! That makes so much sense now.

First number is males, second number is female, third number is unsexed.

1.5.2 is one male, five females, two unsexed.

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