Gender ratio in a three gender system

I'm creating a human race that has 3 sexes: male, female & hermaphrodite.

Is there any biological rules that limits what should be the ratio between sexes or I could just pick whatever works best for my story?

I've added hermaphrodites for storytelling purposes. I don't plant to explain how they've evolved.

My gender determination system works like this:

• FF chromosome -> Female
• MF or FM chromosome -> Hermaphrodite
• MM chromosome -> Male

All the fallowing couples produce viable offspring: Sire Dam

• Male Female
• Male Hermaphrodite
• Hermaphrodite Female
• Hermaphrodite Hermaphrodite

The children of any couple could be of any of the three genders, depending what kind of chromosomes will they receive from their parents. Both sperm and eggs are haploid carrying either M or F chromosome.

Testosterone levels, height and muscles vary by individual but in general:

• Males -highest testosterone level, tallest, most muscular (John Cena, Dwayne Johnson, Vin Diesel)
• Hermaphrodites - medium testosterone level, medium height, muscles like elite female fighters due to natural doping (Ronda Rousey, Kyra Gracie, Cristiane 'Cyborg' Justino)
• Woman -lowest testosterone, shortest, least amount of muscles, looks like any normal women that doesn't like to go to gym

posted almost 8 years ago

user32045‭

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