The hedgehog gene caught my attention the most in this chapter. First, the way it was found seemed like a guess-and-check process and sounded very difficult because the biologists would have to move very specific tissue in the 1950s; there seems to be a lot of room for error and the process sounds tiresome. The way the gene's discovery evolved from that was impressive in itself.
Second, it was able to affect so much of the development of the chicken's wing and the skate's fin. It showed that even if their structure looks completely different, they still hold similarities in their genetics. It got me thinking: if this one gene could affect so much of a living thing, what other genes are common among us? How would the manipulation of those genes affect us?
Something that seems so small can affect the way an organism develops in such a significant way...
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