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Wolves Dogs and Humans IELTS Reading Answers
Part One
There is no doubt that dogs are the oldest of all species tamed by humans and their domestication was based on a mutually beneficial relationship with man. The conventional view is that the domestication of wolves began between 10,000 and 20,000 years ago. However, a recent ground-breaking paper by a group of international geneticists has pushed this date back by a factor of 10. Led by Dr. Robert Wayne, at the University of California, Los Angeles, the team showed that all dog breeds had only one ancestor, the wolf.
They did this by analyzing the genetic history through the DNA of 162 wolves from around the world and 140 domestic dogs representing 67 breeds. The research also confirms, for the first time, that dogs are descended only from wolves and do not share DNA with coyotes or jackals. The fact that our companionship with dogs now appears to go back at least 100,000 years means that this partnership may have played an important part in the development of human hunting techniques that developed 70,000 to 90,000 years ago. It also may even have affected the brain development in both species.
Wolves Dogs and Humans IELTS Reading Answers Part Two
The Australian veterinarian David Paxton suggests that in that period of first contact, people did not so much domesticate wolves as wolves domesticated people. Wolves may have started living at the edge of human settlements as scavengers, eating scraps of food and waste. Some learned to live with human beings in a mutually helpful way and gradually evolved into dogs.
At the very least, they would have protected human settlements, and given warnings by barking at anything approaching. The wolves that evolved into dogs have been enormously successful in evolutionary terms. They are found everywhere in the inhabited world, hundreds of millions of them. The descendants of the wolves that remained are now sparsely distributed, often in endangered populations.
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Wolves Dogs and Humans Reading Answers Part Three
In return for companionship and food, the early ancestor of the dog assisted humans in tracking, hunting, guarding and a variety of other activities. Eventually, humans began to selectively breed these animals for specific traits. Physical characteristics changed and individual breeds began to take shape.
As humans wandered across Asia and Europe, they took their dogs along, using them for additional tasks and further breeding them for selected qualities that would better enable them to perform specific duties.
Part Four
According to Dr. Colin Groves, of the Department of Archaeology and Anthropology at Australian National University, early humans came to rely on dogs’ keen ability to hear, smell and see allowing certain areas of the human brain to shrink in size relative to oilier areas.
‘Dogs acted as human alarm systems, trackers and hunting aids, garbage disposal facilities, hot-water bottles and children’s guardians and playmates. Humans provided dogs with food and security. This symbiotic relationship was stable for over 100,000 years and intensified into mutual domestication,’ said Dr. Groves. In his opinion, humans domesticated dogs and dogs domesticated humans.
Part Five
Dr. Groves repealed an assertion made as early as 1914 that humans have some of the same physical characteristics as domesticated animals, the most notable being decreased brain size. The horse experienced a 16 percent reduction in brain size after domestication while pigs’ brains shrank by as much as 34 percent. The estimated brain-size reduction in domesticated dogs varies from 30 percent to 10 percent.
Only in the last decade have archaeologists uncovered enough fossil evidence to establish that brain capacity in humans declined in Europe and Africa by at least 10 percent beginning about 10,000 years ago.
Dr. Groves believes this reduction may have taken place as the relationship between humans and dogs intensified. The close interaction between the two species allowed for the diminishing of certain human brain functions like smell and hearing.
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Questions Related to IELTS Reading Passage
Question Number One
Following are a few statements given from the passage above. You have to check the answers from the passage and write them correctly.
#1. The brain capacity in humans declined in _______________ by at least 10 percent beginning about 10,000 years ago.
Answer: Europe and Africa
#2. The horse experienced a _______________ reduction in brain size after domestication.
Answer: 16 percent
#3. The domestication of wolves began between ________________ years ago.
Answer: 10,000 and 20,000
#4. The team analyzed the genetic history through the DNA of __________ wolves from around the world and _________ domestic dogs representing 67 breeds.
Answer: 162, 140
#5. __________________ was from the Department of Archaeology and Anthropology at Australian National University.
Answer: Dr. Colin Groves
Question Number Two
Look at the statements below and after reading them, write TRUE or FALSE in front of them.
TRUE – If the statement agrees with the information that is given above in the passage.
FALSE – If the statement disagrees with the information that is given above in the passage.
#1. Humans do not provide dogs with food and security.
Answer: FALSE
#2. In Dr. Groves opinion, humans domesticated dogs and dogs domesticated humans.
Answer: TRUE
#3. The wolves that evolved into dogs have been enormously successful in evolutionary terms.
Answer: TRUE
#4. Dr. Groves believes this reduction may have taken place as the relationship between humans and dogs intensified.
Answer: TRUE
#5. Dr. Groves repealed an assertion made as early as 1914 that humans have some of the same physical characteristics as domesticated animals.
Answer: TRUE
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Conclusion
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