1. Chapter 6 Sections 3 & 4 Review Packet
Evolution Test Review
Chapter 6
Sections 3 & 4 Review Packet

2. 6:3 Darwin’s Theory (pg. 1) B. Fertile Offspring
False; The origin of species
B. Adaptations
True
a. Artificial selection
False; domestic
C. fossil
False; MORE
False; Galapagos

3. Page 2
Darwin was a naturalist, and he studied organisms around the world. He spent time on the Galapagos islands studying finches and proposed that they came from one common ancestor, but evolved into different species over the years.
Evolution is the process of change over time.
When species compete, they compete over Resources such as food, water, and shelter.
Due to lack of resources, When a species over produces offspring, they cannot all survive.

4. Page 2
Variations in a species allows for natural selection to occur. Only the fittest survive, reproduce, and pass on their genes to their offspring.
Darwin’s ideas are classified as scientific theory because it is a well tested concept that is supported by evidence.
Species
Adaptation
Theory
Natural selection

5. Page 2
Species
Natural selection
Adaptation
Variation
Theory
species

6. Page 3
The bones of a bird’s wing and a seal’s flipper are similar, but different in size.
They share a common origin, but function differently.
Scientists can look at the DNA of the bird and the seal and see how similar the dna sequences are.

7. Page 4 B. record Nitrogen D. organisms Protein C. ancestor
Body structure
C. evolution
Backbone
Homologous
Amino acids

8. Page 5
Factors that affect natural selection are overproduction, variation, and competition. Examples will vary based on the factor chosen.
One similarity between natural selection and artificial selection is that traits are passed down to the organisms offspring.
Homologous structures
similar

9. Natural selection Crossword
Across
Down
8. Genetic variation
Reproduction
9. Trait
2. Population
10. Mutation
3. Inheritance
4. Survival
5. Extinction
6. Environment
7. DNA

10. Genetic VariatioN Crossword
Across
Down
1. Species
2. Population
4. Adaptation
3. Behavior
8. Genetic variation
5. Instinct
9. Trait
6. Gene Pool
7. Habitat