Genetics Vocabulary Review

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Across
  1. 2. Tiny, thread-like structures in your cells that hold DNA. They are like books full of instructions for your body.
  2. 3. The way a trait looks or shows up in a person, like eye color, height, or hair type. It’s what you can see.
  3. 6. When both copies of a gene are the same, like having two genes for brown eyes (BB) or two genes for blue eyes (bb).
  4. 7. A trait that only shows up if you have two copies of the gene for it. For example, blue eyes are recessive, so you need two genes for blue eyes to have them.
  5. 8. Traits: Traits you get during your life, like learning to ride a bike or getting a scar. They’re not passed down from your parents.
  6. 10. Short for deoxyribonucleic acid. It’s the tiny chemical inside your cells that holds the instructions for how your body works and looks.
Down
  1. 1. When the two copies of a gene are different, like one gene for brown eyes and one for blue eyes (Bb).
  2. 4. The genes a person has for a trait. It’s like the instructions inside your body that decide what traits you have.
  3. 5. A trait that shows up even if there’s only one copy of the gene for it. For example, if brown eyes are dominant, you’ll have brown eyes even if you have just one gene for brown eyes.
  4. 9. Traits: Traits you’re born with because they’re passed down from your parents through their genes, like your eye color or the shape of your nose.