Genetic and Environmental Factors That Affect Traits

Which of the following traits can be influenced by the environment?

• Eye color

• Length of big toe

• Type of earlobe (attached or hanging)

• Body weight

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An inherited trait cannot be influenced by the environment.

• True

• False

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When identical twins behave differently, this could be a result of:

• DNA

• Environmental influences

• Genetics

• Traits

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True or False: Identical twins have identical genes.

• True

• False

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A section of our DNA that codes for a specific trait is called a _______.

• Gene

• Trait

• Environmental factor

• Chromosome

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Eye color is mostly caused by:

• Environment

• Stress

• Nutrition

• Genetics

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Diet and stress are mostly examples of which type of factors?

• Genetic

• Nutritional

• Environmental

• Inherited

Two tomato plants were placed into the same greenhouse, receiving the exact same amount of sunlight, water and nutrients within the soil. If one plant grew taller than the other, this would most likely be the result of the:

• Environment

• Number of insects in the greenhouse

• Genetics of the plant

• Nutrition

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True or false: Both genetics and environment are responsible for making you who you are.

• True

• False

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Which of the following is easiest to control?

• Environmental factors

• Genetic factors

• DNA

• Height

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