Stations: Sex Determination (Explore)

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Before this lesson: melanin & folate for survival of allelic diversity, then Pigeonetics to open up complex inheritance, then give KWL for sex diversity in nature

Task: Visit each station and answer questions on worksheet.

Stations topics:

  1. Science, Sex, and Society

    1. (Spoken Check for Understanding: How has the scientific model for biological sex changed?)

  2. Myths and Misconceptions

    1. (Spoken Check for Understanding: Who do you think should be heard from the most in conversations about sex and gender?)

  3. Variation

    1. (Spoken Check for Understanding: What have you learned and what information could improve your understanding?)

  4. SRY Gene and Testosterone

    1. (Spoken Check for Understanding: Are sports rules for fairness or entertainment? How do you think we should decide who gets to play and why?)

Introductory slides and previews, as well as printable slides for the stations. Feel free to distribute and modify. Fill-in-the-blanks sections has the first letter as the clue.

Download Links

Previews

Excerpts from Stations and Introduction Slides

Worksheet Tasks by Station w/ checkboxes & self-inventory

 

References

Reebops Nursery (gender-inclusive independent assortment)

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Adapted to be more inclusive from slides created by Laura Funk (staff profile page) by modifying “mom” to egg-giver and “dad” to sperm-giver, and adding UDL supports for students with cognitive differences.

Instructional note: I find it best to give these to students without explanation, so that they must derive what the components of the Reebops model are. Also, HS students are unusually protective over their Reebops. In-person, I put their completed models into plastic slips with their “birth certificate” ie. worksheet.

See steps below and the questions for the assessment at the end.

NGSS Works towards HS-LS3-1. Follow up with meiosis and HS-LS3-2.

Step 1: Flip a coin and highlight the capital or lowercase letter for that row.

Step 1: Flip a coin and highlight the capital or lowercase letter for that row.

Step 2: Combine the results from Step 1 to create a genotype (two letters).

Step 2: Combine the results from Step 1 to create a genotype (two letters).

Step 3: Use the third slide to decode the phenotype.

Step 3: Use the third slide to decode the phenotype.

Step 4: Build the reebop based on the phenotype.

Step 4: Build the reebop based on the phenotype.

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Assessment: Answer the questions in the Google Form.

0. Attach completed Reebops Nursery from your Drive.

1. Name your Reebop

2. What do you think each letter represents in the model?

3. What do you think combining the letters represents in the model?

4. All models are wrong. Some models are useful. What are some things missing from this model? List as many as you can think of.

5. Gametes (egg & sperm cells) contain 1 pair of chromosomes (n = haploid), the other body cells contain 2 pairs of chromosomes (2n=diploid). Is your baby reebop haploid or diploid?