Flatworms can either regrow lost heads or reproduce sexually, not both

When flatworms have the ability to regenerate, they lose the option to lay eggs – instead, they produce offspring by splitting themselves apart

​When flatworms have the ability to regenerate, they lose the option to lay eggs – instead, they produce offspring by splitting themselves apart When flatworms have the ability to regenerate, they lose the option to lay eggs – instead, they produce offspring by splitting themselves apart