Heredity

Level: 3

Requirements

• What is meant by the term “heredity”?
• Draw a picture of an animal cell and label the following parts: Cell membrane, cytoplasm, nucleus, nuclear membrane, ribosomes.
• Explain the following:
  • What is a chromosome and where are they located?
  • What is a gene and where is it found?
• Explain the following:
  • What is meant by the term “allele”?
  • How does a dominant allele differ from a recessive allele?
  • Determine which allele you have of the following genetic traits: widow’s peak, free earlobe, dimples, curved thumb, bent pinky, digit hair, rolling tongue, second toe longer.
  • Using a punnet square, predict the ratio of offspring produced from these monohybrid crosses: TT (tall) crossed with tt (short), Tt (tall) crossed with Tt (tall), Tt (tall) crossed with tt (short).
• Explain the following:
  • What does the process of mitosis accomplish?
  • Draw a sequence of cells that shows the process of mitosis including: prophase, metaphase, anaphase, and telophase.
  • Briefly explain how the DNA in the chromosomes is copied during this process.
• Explain the following:
  • What does the process of meiosis accomplish and how does it differ from mitosis?
  • Draw a sequence of cells that shows the process of meiosis including: prophase I&II, metaphase I&II, anaphase I&II, and telophase I&II.
  • Do the cells resulting from meiosis remain haploid? Explain.
• Describe how DNA encodes the specific proteins that result in genetic traits. Demonstrate your knowledge of this process by using diagrams or paper models.
• What is mutation? Using diagrams or models created in question #7, illustrate the effect of a mutation on the genetic trait.
• Know at least five genetic disorders and tell a story about a famous person or someone that you know who has had one of these disorders.
• Is Biological Heredity the only factor contributing to your character, i.e., what makes you who you are?
• Find three statements from Ellen White’s writings that relate to the previous question.