Transcript Activity 94: A Meeting of the Minds

ACTIVIT Y 94: A MEETING OF THE MINDS
Challenge
How Does Evolution Happen?
Useful Vocabulary:
Adaptation
Natural Selection
Variation
Evolution
DEFINITIONS:
Evolution  A change in a species over time
Adaptation  any trait that makes you better
suited to your environment
Natural Selection  Organisms with traits
better suited to their environment survive and
reproduce more than those with less desirable
traits do.
BREEDING DOGS…
LISTEN TO THE FOLLOWING
SCENARIO AND WRITE YOUR
THOUGHTS IN YOUR
JOURNAL!
Inherited Trait
Acquired Trait
Getting
Started
ROLE PLAYING
1)Charles Darwin: 19 th Century Scientist
2)Isabel Matos: Science Reporter for Station
W-EVO
3)Jean-Baptist Lamarck: 19 th Century
Scientist
4)Wendy Chin: Middle School Student
• Complete the 7 Agree/Disagree while you read!*
• When you are done, answer analysis questions 1 and
2 with your group in your notebook!
DRAW A VENN DIAGRAM
Lamarck
1B)
Darwin
WHY IS DARWIN’S THEORY
MORE CONVINCING?
Analysis Question 1
1A)
WHEN THE ELEPHANT HAD BABIES, THE BABIES
HAD SLIGHTLY LONGER TRUNKS BECAUSE OF THE
STRETCHING.
WHEN THEY GREW UP THEIR TRUNKS STRETCHED
TO EVEN HIGHER LEAVES.
THEIR CHILDREN HAD EVEN LONGER TRUNKS.
THIS HAPPENED FOR MANY GENERATIONS, UNTIL
THE ELEPHANT TRUNKS BECAME AS LONG AS
THEY ARE TODAY.
Analysis Question #2
AN ELEPHANT WITH A SHORT TRUNK COULD NOT
REACH THE HIGHER LEAVES ON A TREE. SO ITS
TRUNK STRETCHED AS IT TRIED TO REACH MORE
LEAVES IN ORDER TO SURVIVE.