1. Natural Selection vs. Selective Breeding
Environmental and Human Influences
EPISD Middle School Science Standards Based Curriculum

2. Natural Selection vs. Selective Breeding
Process by which organisms that are most suited to their environment survive and reproduce most successfully.
Method of breeding that allows only those organisms with desired characteristics to produce the next generation.
Natural Selection vs. Selective Breeding
EPISD Middle School Science Standards Based Curriculum

3. What is a plant adaption
Natural Selection
Summary:
Environmental Influence due to organism adaptation.
What is a plant adaption
common in the dessert?
Mouth parts
ex: beaks, teeth
External color
ex: fur, scales, feathers
Behavior
EPISD Middle School Science Standards Based Curriculum

4. Examples of Natural Selection Peppered Moth
In Manchester England (mid to late 1800’s) industrial polutions darkened the bark of trees impacting the color of moth in the area.
wnloads/scienceresources/pradeep_fla.swf
EPISD Middle School Science Standards Based Curriculum

5. Examples of Natural Selection Galapagos Finch
One small string of islands, many beak variations
ld004.htm
Slides 4-15
EPISD Middle School Science Standards Based Curriculum

6. Selective breeding Domestic Animals Plants: Ex: Chickens, Dogs, Cows
Summary: Human Influence on characteristics and behavior.
Domestic Animals
Ex: Chickens, Dogs, Cows
Plants:
Ex: Corn, Brasilica, Fruit hybrids
EPISD Middle School Science Standards Based Curriculum

7. Examples of Selective Breeding Domestic Animals
Various animals that have been tamed and made fit for a human environment.
Horses
Chickens
Cows
facts.com/dairy_cow_breeds.html
EPISD Middle School Science Standards Based Curriculum

8. Examples of Selective Breeding Domestic Plants
Various plants have been bred to maximize food potential.
Pigs and Vegetables
g.html
Maize to Corn
1067/
Fruit
EPISD Middle School Science Standards Based Curriculum