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Genes and Traits

Genes are sections of DNA. They carry instructions that help build and run a body, and they can affect visible features like eye color, hair, and hand shape.

In the picture

  1. A colored band on the twisted ladder: a DNA segment that carries an instruction.
  2. The eye on the human figure: a visible feature influenced by genes.
  3. The lock of hair on the human figure: a visible feature influenced by genes.
  4. The hand of the human figure: a visible feature influenced by genes.

Examples

  • Eye color often follows patterns seen in parents.
  • Hair texture can be curly or straight, like in other family members.

Quiz: Genes and Traits (Age 12)

  1. According to the card, what are genes?

    • Whole organs that directly control visible features
    • Sections of DNA that carry instructions for building and operating a body
    • Types of cells that only determine eye color
  2. Which of these is a visible feature that genes can influence?

    • Blood type
    • Heartbeat rate
    • Eye color
  3. Which statement matches what the card says about genes and visible traits?

    • Genes influence many visible traits, and the environment often does too
    • The environment is the only influence on all visible traits
    • Genes are the only influence on all visible traits

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.

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Biology, Age 12