People and Dogs: A Genetic Love Story

What is the 'scavenger hypothesis' about how dogs came to be?

• Dogs were trained by humans to hunt.

• Dogs evolved by scavenging food scraps from humans.

• Dogs were sentinels for human settlements.

• Dogs were deliberately trapped by humans.

According to the narrative, what did the wolf do when it first approached the human campfire?

• It howled loudly.

• It attacked the humans.

• It sat down and cocked its head.

• It ran away.

What is one key genetic difference between dogs and wolves according to the study by Erik Axelsson and colleagues?

• A) Dogs have more copies of the AMY2B gene

• B) Wolves have more copies of the AMY2B gene

• C) Dogs and wolves have the same number of AMY2B gene copies

• D) None of the above.

Dogs have evolved to digest starches better than wolves because they have more copies of the ______ gene.

• AMY2B

• AMY1

• AMY3

• AMY4

What role did the domestication of dogs play in early human societies?

• They were used as hunting partners.

• They were used for agricultural work.

• They were considered sacred animals.

• They were primarily kept as pets.

How did the relationship between humans and dogs likely begin according to historical theories?

• Wolves were used as beasts of burden.

• Humans bred wolves for specific traits.

• Wolves approached human settlements for food.

• Humans captured and tamed wild wolves.