Adaptations, Natural Selection, and Selective Breeding
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Slide 1 - Adaptations, Natural Selection, and Selective Breeding
Slide 2 - What the heck are traits?
- Have to learn
- Ex: include walking, flying, what you like to eat
- Born having it -can be physical or behavioral.
- Ex: Eye color, Fur color, shape of nose, instincts
Slide 3 - Variations, mutations, and adaptations
- Variations- Differences in a trait, not all the same
- Mutation- Radom change in the DNA, Kind of like an “error”
Slide 4 - Behavioral Adaptations
- Something an organism DOES to survive
- Examples: Schooling fish, living as a pack or herd, migration
Slide 5 - Physical/Structural Adaptations
- A physical feature of the organism, something that is built into the structure.
- Examples: Beaks on birds, leaves of a plant, claws on a bear, ears on a rabbit
Slide 6 - Internal Adaptations
- Internal adaptations are adaptations that are inside of the organism, can’t be seen visually
- Examples: hollow bones in birds, gills, and xylem in plants
Slide 7 - Natural Selection
- Organisms that are best adapted to survive live and reproduce.
- Survival of the best adapted (fittest)
- Which of the following organism would benefit from natural selection in the given environment?
Slide 8 - Selective breeding
- Humans selecting two organisms to reproduce to get a desired trait