1. How do adaptations aid in natural selection?
ADAPTATION NOTES
How do adaptations aid in natural selection?
4:20-5:20min

2. Adaptation
Any trait that aids the chances of survival & reproduction of an organism
An individual can NOT adapt to environment!!
A species can adapt over time
3 types

3. 1. Structural Adaptations
Changes in the structure of organism’s body parts
Ex: thorns, spines, disruptive coloration (zebra/killer whale), camouflage, mimicry

4. Ex. Camouflage
A species blends in with environment (non-living/ abiotic)
Ex. Walking stick, flounder, leaf katydid

5. Coral king
Ex. Mimicry
One species “copies” another species – visual, smell, sound
Ex: King snake, hawk moth caterpillar, owl butterfly, Viceroy butterfly
Viceroy monarch

6. 2.Physiological Adaptations
Changes in organism’s metabolic processes (jobs of body parts)
Ex: drug resistance - bacteria, pesticide resistance - insects, poison glands, blood shunting – marine mammals, “super” kidneys - desert animals

7. 3. Behavioral Adaptations
Changes in organism’s response to environment
Ex: spinning webs, danger signals, mating rituals, hibernation
Can be learned behaviors (taught) or instinctual (inherited)