Few students made the mistake because the mouth and anus are pretty distinct and it's hard to poke the anus with a needle :P
We threw out all the eggs after the experiments. No real need for em and no one wanted to try growing sea urchins.
Few students made the mistake because the mouth and anus are pretty distinct and it's hard to poke the anus with a needle :P
We threw out all the eggs after the experiments. No real need for em and no one wanted to try growing sea urchins.
RE: Developing a Developmental Lab #4: Sea Urchin Fertilization