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State Standard: HS-LS3-2 -Make and defend a claim based on evidence that inheritable genetic variations may result from: (1) new genetic combinations through meiosis, (2) viable errors occurring during replication and/or (3) mutations cause by environmental factors.

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We will begin with this video, an overview of  meiosis. 

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We will begin with this video, an overview of  meiosis. 

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What is Meiosis?

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Imagine the most crowded place you have ever been. How many people were there in that space? Think back, did you remember seeing any two people that looked the same?
With so many humans living on the planet, how does each person continue to have unique and distinguishable features. Discuss this with your neighbors for a few minutes. We will then convene and discuss as a class.

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How do chromosomes store information? What are chromosomes? How many chromosomes do we have?
We will discuss this topic, I will then explain and answer and questions.

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What is genetics? An entire subject of biology and a huge growing field.

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Let us talk about genetic variation. Genetic variation occurs during meiosis in three different parts. This genetic variation is what allows for the uniqueness of each individual.

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Crossing over occurs during prophase I. This is a phase where genetic variation occurs.

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Watch this video. Each person make a compare & contrast web of the two subject matters, meiosis & mitosis.

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Here we will review the basic stages of meiosis. We will walk through each step as a class & discuss as needed.

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Use the picture for help if necessary.
1. Begin with 1 cell. The 1 cell  and newly created cells undergoes 3 rounds of meiosis. How many cells are present?
2. Begin with 4 cells. These 4 cells undergo 3 rounds of meiosis, how many cells are present?

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Finish the lesson with the Google Drawing activity. 

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Finish the lesson with the Google Drawing activity. 