Daily Review of class notes. Castle Learning due Friday Date: March 29th, 2017- period 1 Aim # 62: How does adaptive variation lead to the survival of an organism? HW: Daily Review of class notes. Castle Learning due Friday Quarterly Exam next Tuesday 4/4 Do Now: Please take out last night’s homework “Phylogenetic Tree”

Daily Review of class notes. Castle Learning due Friday Date: March 29th, 2017- period 5 Aim # 62: How does adaptive variation lead to the survival of an organism? HW: Daily Review of class notes. Castle Learning due Friday Quarterly Exam next Wednesday 4/5 Do Now: Please take out last night’s homework “Phylogenetic Tree”

Aim #62: How does adaptive variation lead to the survival of an organism?

DIFFERENCES (in structure and or behavior) within a population 1) Variation DIFFERENCES (in structure and or behavior) within a population

2) What produces variations? Sexual reproduction recombination of genes Meiosis Crossing over Independent assortment – different gametes made by one parent Mutations

3) Why are variations important to a population? Variation in a species increases the chances that some members will survive an environmental change. Why is this important?

Peppered Moth (~2 minutes) https://www.youtube.com/watch?v=LyRA807djLc

4) For example: The peppered moth

A variation that allows an organism to survive in it’s environment 5) Adaptation A variation that allows an organism to survive in it’s environment

A variation that allows you to survive a changing environment 6) Adaptive Variation A variation that allows you to survive a changing environment

7) What would happen to a population with variation if the environment changed? Those who had an adaptive variation would survive. Those that don’t will die. This would lead to …. EVOLUTION

8) What would happen to a population that did not have variation? If they don’t posses a trait that allows them to adapt to a changing environment, they will die out: EXTINCTION

9) What is the theory of evolution? Theory – well tested conclusion that has been accepted by the scientific community. Evolution : The process by which species change over time. Present day species are related to ancient species.

Summary Questions: The driving force behind evolution is the interaction between the individual organisms and the __________. 2) In your own words, define what an adaptive variation is? 3) Explain what the following statement means, “Individual organisms do not evolve, species do”.