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When male/female determination depends on which chromosome you inherit from a parent, it is hard for a mechanism to arise for the chance to be anything other th
by mnw21cam 10y ago
When male/female determination depends on which chromosome you inherit from a parent, it is hard for a mechanism to arise for the chance to be anything other than 50/50.
A lot of mammal species eliminate excess males using other methods - mainly bloody fights to the death, which also tends to result in the remaining males being the strongest ones.
- Grishnakh 10y agoExcept that it's not 50/50, at least in the case of humans. With humans, it's about 1.07/1, in favor of males. The mechanism is much more complicated than a 50/50 chance of inheriting some chromosome.