Heritable Traits

Natural selection results in change over time by acting on traits that are

• heritable

• new

• mutated 

• better than the best

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If a trait that was inherited from the parents increases an organism's ability to survive and then reproduce, what is this trait?

• an adaptation

• an organisms fitness

• a mutation

• artificial selection

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When the environment determines which heritable traits are most beneficial for survival, which is being considered?

• Artificial selection

• Natural selection

• Environmental selection

• Mutation

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When the humans determine which heritable traits are most beneficial, which is being considered?

• Artificial selection

• Natural selection

• Environmental selection

• Mutation

A slight difference in an inherited trait between individual members of the same species.

• variations

• adapatations

• homologous structures

• analogous structures

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The source of all genetic material is...

• Protein

• cells

• DNA

• The brain

Which of the following is an example of a heritable trait?

• Natural hair color

• Language spoken

• Scars from injuries

• Reading skills

Answer explanation

Natural hair color is an example of a heritable trait because it is determined by genes passed down from parents.

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What is the primary difference between heritable and acquired traits?

• Heritable traits can be influenced by the environment, while acquired traits cannot.

• Heritable traits are passed from parents to offspring, while acquired traits are not.

• Acquired traits are found in the DNA, while heritable traits are not.

• Heritable traits can change during an organism's lifetime, while acquired traits are fixed.

Answer explanation

The primary difference between heritable and acquired traits is that heritable traits are passed from parents to offspring, while acquired traits are not.

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Eye color is an example of which type of trait?

• Acquired

• Heritable

• Environmental

• Behavioral

Answer explanation

Eye color is a heritable trait, meaning it is passed down from parents to offspring.

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What is the term for the physical expression of a heritable trait?

• Genotype

• Phenotype

• Allele

• Karyotype

Answer explanation

Phenotype is the term for the physical expression of a heritable trait. It refers to the observable characteristics resulting from the interaction of genes and the environment.