小 D's story -- DNA

My older son is eight year old and crazy about science. One day he came back
from school and talked about DNA with me.
" Mom, do you think there is DNA in dinosaur eggs fossil?"
" I don't know." I replied.
" Do you think we can reproduce a real dinosaur from the DNA in the dinosaur eggs
fossil and we can get unicorn if we combine the DNA of a horse with the DNA of a bird."
"I am sorry, I know little about DNA. Why don't you talk to Jeff's dad
about these biological problems?", I suggested.

Jeff's dad work in a Medical school and specializes in biology. My son was
very excited and called Jeff's home immediately.

Jeff's dad works on a project about DNA, but he could not talk to
him right away, and promised to call my son back. Later when he called back, After talking to Jeff's dad
for about ten minutes, my son hang up the phone and was disappointed.
" Mom, I do not think Jeff's dad knew what he is doing. "
"Are you sure that it was not because of your not understanding what he
talked about?", I replied.
"I'm sure of that."