HANNAH SHEW'S DP
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Biology

Domestication of Species Project 

     This semester, we completed the “Domestication in Species” project. In this project, each student was to choose an individual research topic about a species. (dogs, cats, horses, foxes etc.) Through this process, we would learn about domestication as a whole, how animals inherit traits from their parents, and how to create a self-guided research project.
      I picked the topic of companionship in Canines. I was extremely interested in the way humans breed dogs for specific traits. I chose companionship because I thought it would be a different perspective than a lot of my peers, who were studying aggression.
     To start this process, I started my research by looking at what dog breeds were considered companions, and which were considered hunters. I also looked at what kind of behaviors/traits made a hunter or companion. After a lot of research, I created a list of behaviors that are found in “companion” dogs. I then found a place I could observe the dogs and their behaviors.
     After the experiment was set up, I observed the dogs for 1 hour. I observed how many minutes out of 60, each dog showed traits/behaviors of companionship. I then, wrote down my findings in a pre-made google spreadsheet. I repeated this process 6  times, going back to the humane society/ dog park on different dates.  Finally, I put all my data into tables, analyzed the results, and put my findings onto a infographic for exhibition. (shown here)
     My original hypothesis was proven correct. The rate of companionship behavior shown in the companion breeds was almost twice as high as the dogs in the hunter breeds. (as seen in the graph)
     Future questions that I have about my individual project, are related to other factors that could’ve affected my results or results in other experiments like this. As I was completing this project, I realized that a lot of a dog’s behavior has to do with training and environment. For example, a dog that’s breed is considered a “hunting dog” might have been raised/trained in an urban setting. This would affect the dog’s hunting skills, because they have never had to practice or use those skills. In my project, I was more interested in the biological side of breeding, so I was looking at what dog breeds have been bred genetically for companionship traits and if that has been successful.

​
Picture

Comparative Anatomy Project -Dissection Week 

Observations:
  1. Squid-
  • Gills are hot pink
  • Squid have 3 hearts
  • Ink sac is full of in postmortem
  • Egg sac was found full of tiny yellow transparent eggs.


My dissection- Fetal Pig:
Why Fetal Pig?
Like humans, pigs are mammals so their anatomy is very similar to that of a human. For example, almost all of the main structures and systems are the same. I love anatomy, and my dream is to become a doctor, and I think this is the reason I chose to dissect a fetal pig. I know about human anatomy from previous classes I have taken, and I thought it would be an amazing experience to compare the two anatomies.

​How do Fetal Pigs compare to Humans?
While many of the main structures and organs are similar, one that stands out is the heart. Much like the human heart, pig’s hearts have two atriums, two ventricles, four valves and an aorta. While the differences are few, the anatomy of a pig has minor changes compared to the human. For example, the liver of a pig has 5 lobes, compared to a human liver that has 4. For the most part Pigs are very similar to human anatomy, and this is the main reason pig dissections are so common to science and anatomy classes. I am so glad I had the opportunity to dissect a fetal pig in biology this year.

Feeding:
Pigs are omnivores, which means they eat plants and animals. In the wild pigs eat a lot of plants, roots and berries for nutrients, but they will eat almost anything they can get. Dead insects are also a part of a common diet. Similar to humans, pigs are one of the only animals that chew their food.
Lifestages:
  • Pigs normally live from 8-15 years.
  • The gestation period for pigs is about 3 months.
  • At birth, piglets weigh 2-3 pounds.
  • It takes about 6 months to grow fully which can be anywhere between 200-280 pounds.
Ecosystem:
Pigs are not an animal that migrates, so they normally inhabit areas with good climate. While they can survive in colder climates, they prefer to live in warm temperatures. In the U.S. pigs mostly live in the south and on the coast of CA.







Click on images to see full sizes and captions! 

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  • Home
  • All About Me!
    • Biography
    • Presentations of Learning
  • College/Career Prep
    • Resume
    • 3 Week Internship at Rivergate Physical Therapy
    • Sophomore Inspire Week
    • Interest Surveys
    • College Prep
  • 12th grade
    • On Course- Paths to Success
    • Advanced Chemistry
    • Math 4
    • Humanities >
      • An Immodest Proposal: the Justice Project >
        • Throughline Podcast
        • Issue Research
        • My Philosophy: Cover Letter
        • Approach Analysis
        • My Approach
        • Project Reflection
      • Humanities Grading Portfolio >
        • Applying Our Knowledge
        • Be of Service
        • Curiously Connect with Community
        • Dig Deep
        • Engage
        • Grow
  • 11th Grade
    • Calculus
    • Humanities >
      • Labor Project
      • Your Life on Earth: Philosophizing Purpose and Place in the #21C
      • The Ethics of Food in America
    • Math 3
    • Chemistry
    • Spanish 3
  • 10th Grade
    • Humanities >
      • Model UN Project
      • Passion Project
    • Biology
    • Math 2
    • Spanish 2
    • Pre-Calc
    • Intro to Engineering
  • 9th Grade
    • Humanities >
      • Sociology and Design >
        • Project Blog
      • The Truth of Happiness
    • Interdisciplinary Project
    • Physics
    • Math 1
    • Spanish 1
    • Studio Art
    • Digital Art