A mule is a hybrid between a horse and a donkey (a male horse and a female donkey). Mules cannot produce offspring so it is under Hybrid Sterility, which falls under Letter D: a postzygotic barrier.
A postzygotic barrier diminishes the ability to reproduce of hybrid offsprings.
Answer:
The meaning fight or flight means if your in a fight you either fight or you run from it which would mean flight
Explanation:
Flight or fight is a way of saying you have 2 things you could do either run away from the problem/fight or face the problem/fight the fight
Nitrogen is not a product of photosynthesis
Answer:
The sister chromosome looks like it fails to completely split, so that shows the daughter chromosome not having either of the chromosomes
Explanation: