Study

Variations in traits

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  • Variation refers to the ________ in traits among individuals of the same species.
    differences
  • Give an example of a trait.
    eye color, height, hair type, skin color, or shape of leaves in plants.
  • Give one example of genetic variation in humans.
    attached vs. free-hanging ear lobes. brown eyes vs. blue eyes
  • Differences in the number of ________ can cause genetic variation.
    chromosome
  • What does variation mean?
    Differences in traits among individuals of the same species
  • Give an example of variation in animals.
    Different fur color in dogs, different patterns on butterfly wings, difference in beak shape among birds.
  • What is the passing of traits from parents to offspring called?
    Inheritance or heredity.
  • Your friend has natural curly hair, but you have straight hair. What kind of variation is this?
    Genetic variation
  • If everyone looked exactly the same, would there be any variation?
    No
  • Give one example of environmental variation in plants.
    Plants in dry areas have smaller leaves to prevent water loss.
  • What do we call the features like eye color, height, or hair type?
    Traits
  • Which of these is not inherited: hair color, eye color, or accent?
    Accent
  • Different fur colors in dogs and patterns on butterfly wings are examples of ________.
    variation
  • Diet and nutrition are external factors that can cause variation.
    True
  • Give one example of environmental variation in humans.
    Sunlight affecting skin tone.
  • True or false: Differences in the number of chromosomes can cause genetic variation.
    True