Mr. Powell Science
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  • Home
  • 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
  • CHS Environmental Science
    • Environmental Chemistry
    • Ecosystems and Population Interactions
    • Earth History and Natural Resources
    • Weather and Climate
  • 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

Fruit Flies oh my!

9/28/2018

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One of the most famous model organisms in the field of genetics is Drosophila melanogaster better known as the common fruit fly. Through his work with fruit flies Thomas Hunt Morgan made many discoveries about how genes interact as well as how certain traits can be sex-linked (appearing only on one type of sex chromosome). In class we did our own work with fruit flies using an interactive digital lab. Click on the fruit fly to go to the digital lab.

GOLD TAPE QUESTION (Activity)

This week's GTQ is actually an activity. Your task is to extract DNA at home. Follow the directions in the attached pdf or just follow along with this video then take a picture of yourself with your lab materials and your extracted DNA (you can be creative with how you take the picture) You will receive 2 pieces of gold tape for your picture/pictures and an additional piece of gold tape for a written conclusion to your lab. You can write about what you learned, what worked or what didn't, and how you think this technique might have additional uses other than just being a fun at home science activity. Good luck!

Ask/Check with your parents before you do this activity and always wear safety glasses and use safe lab procedures 
strawberryextractioninstructions.pdf
File Size: 1783 kb
File Type: pdf
Download File

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Great Discoveries in Genetics

9/27/2018

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In class we watched the documentary "100 Greatest Discoveries: Genetics with Bill Nye" Students followed along with the attached worksheet. They can turn in the completed worksheet for a piece of gold tape. The video can be viewed to the right. The worksheet is attached below.
bill_nye_greatest_discoveries-_genetics.docx
File Size: 24 kb
File Type: docx
Download File

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Quiz Recap

9/26/2018

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Congratulations on completing your first genetics quiz. We will begin learning new material tomorrow!
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Genetics Quiz Tomorrow

9/24/2018

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Tomorrow's quiz will be about DNA, Genes, and Alleles; Punnet Squares, and Incomplete and CoDominance. Use the video playlist below to help you study for the quiz.
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Incomplete and CoDominance

9/21/2018

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It's a good thing Gregor Mendel studied pea plants, because peas follow the rules of complete dominance. Traits that follow complete dominance are known as Mendelian Traits. However, not all traits follow those simple rules. In class today we learned about to different types of Non-Mendelian traits, incomplete dominance and codominance. If you need a refresher on these concepts, check out the video to the right.
Gold Tape Question: This week's Gold Tape question is worth two pieces of Gold Tape! Turn in your work on Monday or send a picture of it to spencer.powell@d51schools.org

Question: In Sponges Yellow (Y) is dominant to blue (y) and Square (S) is dominant to round (s). SpongeBob is heterozygous for his yellow color and square shape (YySs) and SpongeSusie is heterozygous for her yellow color and round (Yyss). Use a dihybrid cross to determine the phenotype and genotype percent (or ratio) possibilities of all offspring.
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Who lives in a pineapple under the sea?

9/20/2018

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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.

bikinibottomgenetics.pdf
File Size: 1064 kb
File Type: pdf
Download File

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Punnet Squares

9/19/2018

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Today we learned how to use a punnet square to predict the possible offspring between the cross of two parents. 
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Genetics Vocabulary

9/18/2018

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In class today we finished our origami genes and also added to our genetics vocabulary list. Understanding the language of genetics is essential to being able to really understand how genetics work and make predictions about the genetic make up of organisms. Here are the words we added today.
Hybrid: Offspring receiving different alleles from each parent
Dominant: The form of an allele that covers up the other form of an allele
Recessive: The form of an allele that is covered up by the dominant allele
Genotype: refers to the genetics make up of an organism (represented by pairs of letters TT, Tt, tt)
Phenotype: The physical traits of an organism, more simply what an organism looks like (Tall, short)
Homozygous: a pair of alleles that are the same AA, aa, BB, bb
Heterozygous: When a pair of alleles are different Aa, Bb, Cc
​
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What is a gene?

9/14/2018

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Today many of us finished out origami gene and we used our textbooks to record definitions for DNA and Genes.
DNA: Deoxyribonucleic Acid, a molecular blueprint for living things, composed of the nucleotides; Adenine, Thymine, Cytosine, and Guanine.

Gene: ​A section of DNA on a chromosome that contains the code for a protein.
Gold Tape Question: Where was George Beadle born and what is his famous scientific discovery that has to do with genes?
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Origami DNA

9/13/2018

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In class we completed a short Plicker quiz then finished coloring and began folding our origami DNA molecules. We will finish folding our molecules tomorrow then attach them into a long chain.
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    Mr. Powell is a High School Science Teacher in Western Colorado.

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