Basically, this chapter is about DNA and Smelling gene. According to this chapter, DNA gives information that fossil can not provide. Especially, sense of smell records all the history of body in DNA, so scientists can find information about body soft organs, which do not become fossil.
This chapter was really short but really amazing because I did not know that we are able to see color because we use smell genes for sight genes. When i read this part i had some questions.
- Why we use smell genes for sight genes in order to see color?
- Can we just make less smell gene and more sight gene? (of course, i know we have no control upon it)
I think it is my hw to figure out, or maybe the answer is on next chapter.
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