专业高分生物学代写论文_essay代写
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Anthropology 005
Problem Set # 6: Hominin evolution.
Fall 2018
1.
A.
Human beings have language;
Human beings are bipeds;
Human cranial capacity is large;
Human beings can extract and forage;
Human beings can make complex tools.
B.
Most people have smaller skulls;
Humans do not have a sagittal ridge;
Bipedal doctrine.
C.
Chromosome. Modern humans and apes share the same ancestors. Apes have the basic characteristics of human beings. They can walk upright and make simple sand tools. Chromosome discovery is the earliest human feature.
D.
No. Chimpanzees are not human. Chimpanzees can make and use tools, but they are relatively simple tools. They can not make and use complex tools. This is different from human beings. In addition, human beings can use fire and language, which chimpanzees do not have. So chimpanzees are not human.
E.
Yes. In the early days of human formation, there were different groups of human beings, including early human beings in Africa, Europe and Asia.
A.
Chimpanzees live in dense forests and humans live in Plains near rivers;
Most chimpanzees are collectors. They can pick and eat anything, just collect food, human foragers collect, and extract things.
B.
Human ancestors first began to eat berries, bark, fruit and small animals. Anthropologists judge that most people begin to eat vegetarians based on the fossil teeth. Because of their small front teeth, short canine teeth and large flat molars, this also shows that prehistoric humans have been vegetarian.
C.
In modern society, the sharing of documents on the Internet is a manifestation of reciprocal altruism. People who already have a specific document (economic goods) upload it and share it with those who need it. This process is called sowing. Whether other people can download (receive) this particular file depends directly on the cooperation of the seeder.
D.
Because chimpanzees'food sources are mainly direct access to nature. Human beings depend on nature and can produce on their own initiative.
3.
A.
The abbreviation of subspecies is "ssp", which is not used as a scientific name. In botany, subspecies are many lower than species.
B. DNA is characterized by transmission from generation to generation with no intervals or breaks; moreover, the error rate of DNA replication, i.e. the rate of gene mutation, is basically constant. Through DNA analysis, all our ancestors on Earth come from the same ancestor.
C. Yes. Because the inheritance of DNA is constant and the probability of making mistakes is very small, the DNA of modern and ancient Homo sapiens is the same. If the DNA detected by fossils is the same as that of modern humans, it can be judged as Homo sapiens.
D. How did human skin evolve in human evolution? It can be studied by Archaeology and human fossils without the influence of region.
