Apple Tree Growing

Hi All

My 4 year old son gave me some apple seeds from his freshly eaten apple, Daddy can you grow them, i said i would give them a go, not expecting much to happen.

Hmmmm one has grown. so far.
I don't know what apple they are from.

so my question's are,Will the seed develop into a full blown tree, and will it produce apples.
 

I'm not worried about the size.

As i have a mate on the local council, parks dept.
who will find a home for it,