Name:___________________________________________ Date:________
🐶​
Dog Tales ​ - NOVA ​
( ​https://www.pbs.org/wgbh/nova/video/dog-tales/​ )
​~54 min
2020
___ 1. During the brain imaging test, the ​pink​ toy shown to the dog let the dog
know to expect what? a) food
b) praise
c) punishment
___ 2. Dogs evolved from what wild ancestor?
a) wolves
b) coyotes
c) hyenas
___ 3. Forensic DNA examination found the earliest known ancestors of modern
dogs occurred __________ years ago.
a) 100,000
b) 30,000
c) 15,000
___ 4. The foxes in the experiment are tested by what procedure?
a) a human placing their hand in the cage
b) a scan of the fox’s brain
c) the reaction of the fox to other foxes
___ 5. What happened to the foxes after 10 generations of ​selective breeding​ the foxes for tolerance?
a) they become more aggressive
b) they act like dogs
c) they learn to bark
___ 6. Selective breeding for a behavioral trait, like friendliness, will increase the frequency of:
a) other traits, like fur color
b) offspring in a litter
c) early death
___ 7. The original dog probably resembled what modern breed?
a) poodle
b) german shepherd
c) basenji
___ 8. How many genes control the size differences of dogs? a) 2 b) 7
c) 54
___ 9. In the test of cooperative skills, wolves were:
a) more cooperative than dogs
b) as cooperative as dogs
___ 10. What makes the dog uniquely trainable?
a) its exceptional intelligence
b) its submissiveness
c) less cooperative than dogs
c) its bond with humans
___ 11. What hormone is responsible for the dog’s “loving” behavior?
a) estrogen
b) oxytocin
c) testosterone
___ 12. What condition in humans shows a mutation in the gene that controls this hormone?
a) Williams Syndrome b) Down Syndrome
c) Edward Syndrome
** Overall Summary:
Describe the changes that occurred during the evolution of dogs from wolves.
www.biologycorner.com​ / ​https://www.pbs.org/wgbh/nova/video/dog-tales/