Page 5 - 3103_dogs
P. 5
Dogs and More Dogs student handout
From Wolf to Dog
All dogs descended from the gray 5 Calculate the total of each hand. 7 Deal six cards to each player.
wolf. But dogs are so different from Follow the instructions in the Repeat steps 5–7.
wolves that it seems difficult to box below for your group. 8 Play a total of 20 hands, record-
imagine how one species led to 6 Shuffle all 24 cards together. ing the entire deck average after
another. How an organism evolves This represents the mating of the hands 5, 10, and 20.
has to do with the selective wolves. As in nature, some of the 9 When you have finished the
pressures it is exposed to in its offspring from this mating have game, answer the questions
environment. In this activity, see random genetic mutations of listed on your “Examining the
what happens to two different their temperament genes. To Game” student handout.
populations of wolves as different simulate this, draw two random
selective pressures are applied. cards, keeping track of where deck Averages
they came from in the deck. Initial average
Procedure Throw a die for each card you
have removed and then change 5th-round average
Cut apart the 24 cards from your
“Wolf Deck” student handouts. the value on the card (write the 10th-round average
2 Appoint one member of your new number directly on the card)
group to be the scorekeeper. The according to the following table: 20th-round average
scorekeeper will record the total Die Result Card Change
value of each student’s hand of 1 +1
six cards before the game begins 2 -1
and after each round. The 3 +2
scorekeeper should also 4 -2
calculate the deck average by 5 +3
summing all 24 cards before the 6 -3
game begins, and after the 5th,
10th, and 20th round. Return the cards back to their
3 Have the scorekeeper calculate original place in the deck.
the initial value of the deck and
record below. This represents
the initial temperament of your wolf Group A wolf Group B
wolf population. Due to selective pressures, the Due to selective pressures,
4 Deal six cards. Each hand wolves with the most aggressive the wolves with the most
represents the collection of genes do not survive. To aggressive and most tame
genes that contribute to the simulate this, the players who genes do not survive. To
temperament for one wolf. have the two lowest hand totals simulate this, the players who
A hand with low value represents will remark their cards with have the highest and lowest
an aggressive wolf while a hand numbers on the cards of the hand totals will remark their
with higher value represents a other two players. Twelve cards cards with numbers on the
tamer animal. will be remarked. cards of the other two players.
Twelve cards will be remarked.
