In chapter 3 Shubin mostly talks about historical discoveries of ZPA tissue. Fossils are not only anatomically related to us, there is more to this. Important biology concept that is discussed in this chapter is genes. Genes are major part of your body; they make you who you are. In this chapter Shubin also discusses about this laboratory which is divided into 2 parts: 1st part is to study fossils and the other one is to embryonic development and DNA sequences. As we know that most cells are alike in our body, Shubin says that we have same exact copy of DNA in most of our cells. Which I think is true because when cell divides it make 2 cells that are similar.
Shubin discusses about the limbs that are in our body: "Our limbs exist in three dimensions: They have a top and a bottom, a pinky side and a thumb side, a base and a tip. The bones at the tips, in our fingers, are different from the bones at the shoulder. Likewise, our hands are different from our thumbs." This is a quote from the book.
There are many different chemical that happen in our body at the same time. So I think from what the chapter was trying to say: your embryo and basic things are already ready to go before a women finds out that she is pregnant. Which I think is really cool because there are many things that are happening inside our body with us acknowledging it. By this I feel that we are not the boss of the body but our brain is!
Shubin discusses about the limbs that are in our body: "Our limbs exist in three dimensions: They have a top and a bottom, a pinky side and a thumb side, a base and a tip. The bones at the tips, in our fingers, are different from the bones at the shoulder. Likewise, our hands are different from our thumbs." This is a quote from the book.
There are many different chemical that happen in our body at the same time. So I think from what the chapter was trying to say: your embryo and basic things are already ready to go before a women finds out that she is pregnant. Which I think is really cool because there are many things that are happening inside our body with us acknowledging it. By this I feel that we are not the boss of the body but our brain is!
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