What do ALL of these living things have in common?

Traits that increase an organism’s likelihood of survival are called…

Explanations for Adaptations • Protection against predators• To help attack prey• For eating or feeding• Movement• To suit their environment or habitat

Adaptation Categories

Behavioral Adaptations

Structural Adaptations

Physiological Adaptations

What does all this What does all this mean?...mean?... The right traits or adaptations allow The right traits or adaptations allow

these “chosen” organisms to these “chosen” organisms to survive in their environment longer survive in their environment longer than the organisms WITHOUT the than the organisms WITHOUT the traitstraits

A CHANGE in the INHERITED traits of A CHANGE in the INHERITED traits of an organism is called an organism is called

Darwin’sDarwin’sTHEORY OF NATURAL SELECTIONTHEORY OF NATURAL SELECTION

“SURVIVAL OF THE FITTEST”

Lamarck’s Lamarck’s THEORY OF ACQUIRED CHARACTERISTICSTHEORY OF ACQUIRED CHARACTERISTICS

This is an adult giraffe. The giraffe reaches for leaves slightly out of reach. The use of the neck causes it to lengthen slightly. The offspring of the giraffe also has a longer neck.

So which is right?...So which is right?...

Lamarck is definitely INCORRECTLamarck is definitely INCORRECT SOME of Darwin’s theory is supported SOME of Darwin’s theory is supported

todaytoday Simpsons meet Darwin videoSimpsons meet Darwin video

What we believe:What we believe: The Catholic Church believes, if life did The Catholic Church believes, if life did

develop over time, then it did so under the develop over time, then it did so under the stimulus and guidance of God, and their stimulus and guidance of God, and their ultimate creation must be ascribed to him. ultimate creation must be ascribed to him.

In composition notebook…

Who is Darwin? What is his

theory? Draw his theory in

action.

Who is Lamarck? What is his

theory? Draw his theory in

action.

Explain how the color of the moths increases or decreases their Explain how the color of the moths increases or decreases their chances of survival.chances of survival.

Explain the concept of "natural selection" using your moths as an Explain the concept of "natural selection" using your moths as an example. example.

What would happen if there were no predators in the forest. Would the What would happen if there were no predators in the forest. Would the colors of the moths change over time? Defend your answer.colors of the moths change over time? Defend your answer.

Propose a design for another experiment that tests moth phenotypes Propose a design for another experiment that tests moth phenotypes in a forest where there are no predators. The limiting factor is food in a forest where there are no predators. The limiting factor is food availability for caterpillars (baby moths) and caterpillars with larger availability for caterpillars (baby moths) and caterpillars with larger mouthparts are able to obtain food faster. What data would mouthparts are able to obtain food faster. What data would researchers take in this experiment to show how natural selection researchers take in this experiment to show how natural selection affects the moth populations.affects the moth populations.

Word WallsWord Walls (25 words describing the following

words…)

EMBRYOLOGYEMBRYOLOGYVESTIGIAL STRUCTUREVESTIGIAL STRUCTUREHOMOLOGOUSHOMOLOGOUSFOSSILFOSSILDNADNA

Pick ANY threePick ANY three