Specific purpose: To explain the domestication and selective breeding of the diverse list of dog breeds from the ancestor of the modern day wolf.
Central Idea: Information about the origin of the domesticated dog.
Introduction
I. Have you ever wondered where the long, diverse list of beautiful dog breeds came from?
II. Well today I’m going to explain how the interaction with early humans and their haphazard discovery of domestication has led from the predecessor of the modern day wolf to the dozens and dozens of dog breeds we have today.
Scientific Controversy and Recent Discoveries
I. There are many conflicting arguments about the timeframe and whereabouts that humans and the predecessor of the wolf started interacting. Very recently, as …show more content…
Thirty to forty thousand years ago the world was in the midst of the last ice age. The ancestors of some of our modern day mammals grew to 3 or 4 times their sizes today, such as the mammoth and the giant sloth. Everything was much larger, furrier and slower than today in order to conserve heat to survive.
a. Humans of this era were nomads, or hunter-gatherers, that moved along with the herds, since there was little to no vegetation other than in the immediate vicinity of the equator.
b. And along came the ancestor of the modern day dog, the megafaunal wolf, much bigger and stronger than any wolf today. Megafaunal is the term for many of the larger species of this period. The megafaunal wolf is the ancestor of many canines, or the canis genus, that we know today, such as the jackal, hyena, fox, coyote, dingo, as well as the other wolfs of various regions of the world. We know that the genetic split from this bloodline occurred at this point because of the divergence of genes amongst the different canines at this particular time period.
c. These ancient wolf had developed a social structure, teamwork when hunting, a strong familial bond and compassion for one another. This was key to their future relationship with …show more content…
Human-wolf contact. We’re unsure of how – but somehow there became a direct bond between human and wolf. Maybe it was because generation after generation of a distant contact they mutually became use to one-another. Maybe the wolf would protect their food source, the human, from a distance, scaring off predators or alerting humans to them. After the initial, direct contact occurred the rapid selective breeding of psychological traits began, yet the physical appearance of the wolf would change very little. We know this occurred after domestication because these traits would not have come by the traditional natural selection process which would have ensured their survival. This is the first occurrence of
Central Idea: Information about the origin of the domesticated dog.
Introduction
I. Have you ever wondered where the long, diverse list of beautiful dog breeds came from?
II. Well today I’m going to explain how the interaction with early humans and their haphazard discovery of domestication has led from the predecessor of the modern day wolf to the dozens and dozens of dog breeds we have today.
Scientific Controversy and Recent Discoveries
I. There are many conflicting arguments about the timeframe and whereabouts that humans and the predecessor of the wolf started interacting. Very recently, as …show more content…
Thirty to forty thousand years ago the world was in the midst of the last ice age. The ancestors of some of our modern day mammals grew to 3 or 4 times their sizes today, such as the mammoth and the giant sloth. Everything was much larger, furrier and slower than today in order to conserve heat to survive.
a. Humans of this era were nomads, or hunter-gatherers, that moved along with the herds, since there was little to no vegetation other than in the immediate vicinity of the equator.
b. And along came the ancestor of the modern day dog, the megafaunal wolf, much bigger and stronger than any wolf today. Megafaunal is the term for many of the larger species of this period. The megafaunal wolf is the ancestor of many canines, or the canis genus, that we know today, such as the jackal, hyena, fox, coyote, dingo, as well as the other wolfs of various regions of the world. We know that the genetic split from this bloodline occurred at this point because of the divergence of genes amongst the different canines at this particular time period.
c. These ancient wolf had developed a social structure, teamwork when hunting, a strong familial bond and compassion for one another. This was key to their future relationship with …show more content…
Human-wolf contact. We’re unsure of how – but somehow there became a direct bond between human and wolf. Maybe it was because generation after generation of a distant contact they mutually became use to one-another. Maybe the wolf would protect their food source, the human, from a distance, scaring off predators or alerting humans to them. After the initial, direct contact occurred the rapid selective breeding of psychological traits began, yet the physical appearance of the wolf would change very little. We know this occurred after domestication because these traits would not have come by the traditional natural selection process which would have ensured their survival. This is the first occurrence of