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  • Home
  • CHS Biology
    • Unit 1
    • Unit 2
    • Unit 3
    • Unit 4
  • CHS Food Science
    • Unit 1: Introduction to Food Science and Proteins
    • Unit 2: Fermentation
    • Unit 3: Simple Carbohydrates
    • Unit 4: Complex Carbohydrates
    • Unit 5: Lipids
    • Unit 6: pH and the Maillard Reaction
    • Food Science Final Project
  • CHS OWL
    • Nature Name Tags
    • True Colors
    • Survival Stories
    • Knots to Know
    • Leave No Trace
    • Fly Fishing >
      • Major Macroinvertebrates
      • Fly Wallet
      • Build a Fly FIshing Leader
      • Ultimate Fly FIshing Trip
  • APES
    • Unit 1: Ecosystems
    • Unit 2: Biodiversity
    • Unit 3: Populations
    • Unit 4: Earth Systems and Resources
    • Unit 5: Land and Water Use
    • Unit 6: Energy Resources and Consumption
    • Unit 7: Atmospheric Pollution
    • Unit 8: Aquatic and Terrestrial Pollution
    • Unit 9: Global Change
  • Science Resources
    • Genetics >
      • Genetics Exam Review
    • Evolution
    • Chemistry
    • Physics - Motion and Forces >
      • Speed, Velocity, and Acceleration
      • Force
      • Newton's 3 Laws of Motion
      • Gravitational Force
      • Weight
      • Newton's Second Law - Finding a Net Force
      • Newton's Second Law of Motion - Finding Acceleration
      • Newton's Third Law of Motion
    • Physics - Energy and Waves
    • Astronomy
    • Next Generation Science Standards (NGSS)
  • BMS Lacrosse
  • STEM at CHS
  • About
  • Contact

Genetics Unit Test Monday

9/27/2019

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Study your notes, do these Genetics Activities, and watch (or re-watch) the videos below to help you prepare for the exam tomorrow.
Gold Tape Question: In England and Wales pedigrees (Family Trees) are officially recorded by the country. Where are the official documents stored?
Big Red Challenge: ​The first student to comment, message, or email the score of this weekends Nebraska Cornhuskers game will get a pack of Big Red Gum on Monday. Ohio State is the number 5 team in the country right now and Nebraska are big underdogs in this game so, if the Huskers win, then every student to responds will get a pack!
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Gummi Bear Pedigrees

9/26/2019

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​Pedigrees are one of the more challenging concepts to wrap your head around in genetics. The basics of pedigrees, what the symbols and charts represent are easy, however interpreting and creating the pedigrees from a description can be quite the task. Today in class students tried their hand at pedigrees not just with pen and paper but with Swedish fish and gummi bears. The fish were "female" and the bears were "boys" and by reading about the family history, students were able to assemble pedigrees using their candy to represent the family members, with their color(s) representing their genotype.
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Pedigrees Continued

9/25/2019

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We continued our work with pedigrees today working on problems in partners and individually. Use the video to the right to review pedigree analysis. The genetics unit exam will be Monday September 30. 
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Pedigrees

9/24/2019

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This week we will be learning about pedigrees. We went over the basics in class today. Watch or rewatch the video to the right to learn how do draw a pedigree, which is just a family tree that's used to track a single trait.
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DNA Extraction Lab

9/13/2019

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In class today we extracted DNA from strawberries. You can do this experiment again at home too. Check out the video to the right to see how this experiment works.

Gold Tape Question: Strawberries are Octoploid meaning they have 8 copies of their DNA in every cell which makes them great for DNA extraction. There is another common fruit that is used in this experiment as well that is hexaploid. What is the fruit and what does it mean to be hexaploid? (Hint: The fruit is green)
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100 Greatest Discoveries with Bill Nye: Genetics

9/11/2019

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Genetics Quiz Tomorrow

9/9/2019

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Tomorrow's quiz is over genetics vocabulary, punnet squares, incomplete and co-dominance, with an extension problem about dihybrid crosses. Use the videos below to help you study for the quiz.


​Punnet Squares

Incomplete and CoDominance


​Dihybrid crosses

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Incomplete and CoDominance

9/6/2019

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Today we learned about two new types of genetics, Incomplete dominance and CoDominance. Both of the types of genetics will be on the quiz Tuesday. Watch the video to the right to review both concepts.
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​Double Gold Tape Weekend!
Fold your Origami DNA and bring it to Mr. Powell for some gold tape. Use the video to the left as a guide.

Question: What kind of dominance is expressed in human blood types? Explain your answer (you must write at least a two sentence explanation)

Big Red Challenge:First student to email or comment the score wins a pack of Big Red gum!

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Punnett Squares Continued

9/5/2019

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We are continuing our work on punnet squares with a little help from our porous friend Spongebob. If you need a refresher on how to complete a punnet square, check out the video to the right.
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Punnett Squares in a Pineapple Under the Sea

9/4/2019

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Today we learned how to create Punnett squares. Watch the video to the right to see an animated version of this powerful genetics technique. We also started working on some independent Punnett square work with our good friend Spongebob Squarepants.

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    Mr. Powell is a High School Science Teacher in Western Colorado.

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