For some reason I'm thinking that planting the seeds of many types of fruit trees, won't produce the same fruit. Maybe this only applies for hybrid types of fruit or patented varieties? I'm not totally sure but wanted to bring it up.

One of the local women who works for us at the ranch, brought many avocados to us from her trees. I've planted about 10 of the seeds and was excited to see that half have now popped up through the soil. She has planted these seeds before and knows that they will produce. On the other hand, we have bought some Hass avocados from the store and she says that they won't grow. It's likely that those seeds have been GMO'd to not produce.