Your Inner Fish by Neil Shubin
Chapter Questions
Chapter 1 – Finding Your Inner Fish
1. Explain why the author and his colleagues chose to focus on 375 million year old rocks in their search for fossils. Be sure to include the types of rocks and their location during their paleontology work in 2004. The author and his colleagues chose to focus on 375 Million Years as it was a period when the transformation took place from fish to fish with limb. The fish without characteristics of amphibians were found in 385 million year old rocks and the amphibians without limbs was discovered in 365 million year old rocks. Therefore, the intermediary fossil which has both fishes' and amphibians' characteristics, is possible to be discovered in 375 million year old rocks. Through gradual mild pressure and low heat, the sedimentary rocks form and were examined. The rock can also formed in rivers and seas, where it's a habitats form many animals. The …show more content…
Briefly explain how we perceive a smell.
There are tiny molecules floating that is register as odor with our noses. Through our breathing or sniffing, we take in these odor molecules. The particle go through our nose and trapped by the mucous lining of our nasal passages. Within the mucous lining, there are nerve cells and it will sense the odor. Those lining will give out signal and sent it to our brain to interpreted and reconigzed as a smell.
2. Jawless fish have a very few number of odor genes while mammals have a much larger number. Why does this make sense and how is it possible?
It male sense as mammals are specialized smelling animals, which related to the odor genes that mammals have. Odor genes look like copies, but modified for everyone, and one of the variation is in the jawless fish. This means that the odor genes arose by many duplication of the small number of genes.
Chapter 9 – Vision
1. Humans and Old World monkeys have similar vision – explain the similarity and reasons for
Chapter Questions
Chapter 1 – Finding Your Inner Fish
1. Explain why the author and his colleagues chose to focus on 375 million year old rocks in their search for fossils. Be sure to include the types of rocks and their location during their paleontology work in 2004. The author and his colleagues chose to focus on 375 Million Years as it was a period when the transformation took place from fish to fish with limb. The fish without characteristics of amphibians were found in 385 million year old rocks and the amphibians without limbs was discovered in 365 million year old rocks. Therefore, the intermediary fossil which has both fishes' and amphibians' characteristics, is possible to be discovered in 375 million year old rocks. Through gradual mild pressure and low heat, the sedimentary rocks form and were examined. The rock can also formed in rivers and seas, where it's a habitats form many animals. The …show more content…
Briefly explain how we perceive a smell.
There are tiny molecules floating that is register as odor with our noses. Through our breathing or sniffing, we take in these odor molecules. The particle go through our nose and trapped by the mucous lining of our nasal passages. Within the mucous lining, there are nerve cells and it will sense the odor. Those lining will give out signal and sent it to our brain to interpreted and reconigzed as a smell.
2. Jawless fish have a very few number of odor genes while mammals have a much larger number. Why does this make sense and how is it possible?
It male sense as mammals are specialized smelling animals, which related to the odor genes that mammals have. Odor genes look like copies, but modified for everyone, and one of the variation is in the jawless fish. This means that the odor genes arose by many duplication of the small number of genes.
Chapter 9 – Vision
1. Humans and Old World monkeys have similar vision – explain the similarity and reasons for