Amplify Traits & Reproduction Chapter 1

Three tigers have different parents. They all have the same proteins for stripe pattern in their cells. What can you say about the tigers' stripe patterns?

• They will have the same stripe patterns since all tigers have the same stripe patterns.

• They will have the same stripe patterns since their proteins for stripe pattern are the same so the proteins will connect in the same way.

• They will have different stripe patterns because even with the same proteins for stripe pattern, the proteins can connect in different ways.

• They will have different stripe patterns since only offspring from the same parents have the same stripe patterns.

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Two goldfish have different parents. One fish has a split tail and the other does not. Why do the goldfish have tails with different shapes?

• Each goldfish has a different tail shape because offspring from different parents will have different tail shapes.

• Each goldfish has a different tail shape because they have different versions of the gene for tail shape that connect together to make different tail shapes.

• The goldfish have different versions of the gene for tail shape. The genes are split inside one goldfish’s tail but not inside the other’s.

• The goldfish have different versions of the gene for tail shape, which instruct for different proteins that connect in different ways to make different tail shapes.

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There are two junco birds that each have different proteins in their cells for beak pointiness. They have different parents. What can you say about the birds' beak pointiness?

• They will have the same beak pointiness because even with different proteins for beak pointiness, the proteins can connect in the same way.

• They will have different beak pointiness since offspring from different parents have different beak pointiness.

• They will have different beak pointiness since their proteins for beak pointiness are different so the proteins will connect in different ways.

• They will have the same beak pointiness since all junco birds have the same beak pointiness.

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A father sheep has curly wool while a mother sheep has straight wool. Which of these statements explains why one of their baby lambs has curly wool?

• The baby lamb inherited its copies of the gene for wool shape from its father and not from its mother. Just like its father’s genes, those genes instruct for proteins that connect in ways that make its wool curly.

• The baby lamb inherited its copies of the gene for wool shape from its father and not from its mother. Those genes connect together to make its wool curly.

• The baby lamb inherited one copy of the gene for wool shape from its father and one copy from its mother. That gene combination instructs for proteins that make its wool curly.

• The baby lamb inherited one copy of the gene for wool shape from its father and one copy from its mother. Those genes connect together to make its curly wool.

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What is a trait?

• a random change to a gene that sometimes results in a new trait

• an organism produced as a result of reproduction

• the way something is shaped or constructed

• a specific characteristic of an individual organism

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What is variation?

• any difference in traits between individual organisms

• a specific characteristic of an individual organism

• a specific form of a gene that provides instructions for making a particular protein molecule

• a long piece of DNA that contains many genes

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What is a feature?

• how something works

• a characteristic that all members of a species have

• an instruction for making a protein molecule

• a specific form of a gene that provides instructions for making a particular protein molecule

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How something works is called a ____?

• structure

• feature

• function

• trait

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A type of large molecule that performs important functions inside organisms.

• protein molecule

• gene

• DNA

• chromosome

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Structure is....

• a claim supported by evidence

• the way something is shaped or constructed.

• how something works

• a specific characteristic of an individual organism

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