Similarities Between Chimpanzee And Modern Human Skeleton

1301 Words 6 Pages
Stop 1: Chimpanzee, Modern Human, and Neandertal Skeleton

1. The modern human skeleton is much larger in size compared to the chimpanzee and hominid skeleton. The Chimpanzee had longer arms, much narrower rib cage and smaller skull compared to both ancient hominid and human. On the other hand, the hominid had robust bone joints, allowing more flexibility. The skeleton structure of chimpanzee indicates that they moved by using four limbs while both human and hominid walked upright.
2. The Neanderthal is more similar to the modern human skeleton than to the chimpanzee. They had larger skull size, walked upright and less powerful jaws than the chimpanzees. The Neanderthals were shorter and broader than the modern human.

Stop 2: Extinct Primates
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Homology is used to describe the inheritance of similar structure from a common ancestor. Homology is observed with the basic set of bones with different size and positions.

Stop 6: Homologies looking at the limbs

14. The similarities among the limb structure indicate that all these living animals evolved from the same four-legged ancestor which lived about 365 million years ago.
15. Even though both eagles and bats flies, their wing bones look different. This is because eagles evolved from bird-like organisms and bats evolved from rat-like organisms. These characters are called homoplasy and they evolved by convergent evolution.
16. Human and Chimps look much alike because they have the similar DNA recipe. Chromosome 2 and 10 are different between human and chimps.

Stop 7: DNA comparing humans and Chimps

17. There is 98.8 percent genetic similarity between humans and chimps. They are so different because just 1.2 percent difference can equal to 35 million differences in DNA. Some of these have a big impact and others don’t. Even the identical sequence of DNA can work differently depending on the environmental condition.
18. OPn1LW gene is shared on the X chromosome. It is responsible for color
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A) Mitochondrial DNA is used to tract female ancestry because it passes from mother to all children, but only daughter can pass it to the next generation. B) Male ancestry can be tracked by Y chromosome because males must get the Y chromosome to become male.
23. Scientist can use disappearance in DNA sequence to estimate when species branched apart.
24. DNA can survive 10,000 years in fossils.
25. Scientists were able to create a single-family tree by analyzing mitochondrial DNA from people all over the world. The Khoisan people in Southern Africa carry the most ancient DNA mutation.

Stop 10: Variation, selection, evolution into the human body

26. Variation is caused by recombination and mutation. Mutation is the random change is the genetic sequence, while recombination is the rearrangement of genetic material during meiosis.
27. The size and position of the spots were controlled by a single gene. In green leaves, the butterfly with wing spots has greater advantage over butterfly without wing spots. However, in brown leaves, butterfly without spots have a greater chance of survival
28. The Basque people lived in a relative isolation along the mountainous border between France and Spain. Because of genetic drift, they have one of the highest rates of the Rh- blood type in the

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