Chapter 8-- Making scents

I like how Shubin focuses on various aspects going from layers of rocks,
tiktaalik, body development, teeth, our sense of smell, and etc.
I also really liked how Shubin exemplified a mini experiment that
will help the readers obtain a greater understanding of DNA through
such a fun hands-on activity. What really caught my interest was when
Shubin mentioned that our sense of smell allows us to discriminate
among five thousand to ten thousand odors! What's even better is the
fact that three percent of our genes are reserved only for our sense
of smell!! WOW. Who would've expected that our sense of smell is THAT
significant. I like how Shubin answers my question by going right to
"where our olfactory genes come from". It's such a waste that three
hundred of thousand genes end up being function-less. To put everything
together, Shubin profoundly discusses how necessary our sense of smell
is to every living creature in this world.