Genetics and Heredity

Phenotype

• An organism's physical appearance, or visible traits

• trait that cannot be masked

• recessive

• trait that can be masked

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A litter of kittens have traits that are similar to both the mother cat and the father cat. Which best explains this situation?

• The kittens are provided the same kind of milk from their mother as they grow.

• The kittens inherit some of their traits from their mother and some from their father.

• The kittens are kept at the same temperatures by their mother when they are first born.

• The kittens are taught by their parents to have similar traits.

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Which best explains why children resemble their parents?

• They eat the same foods.

• They have similar DNA.

• They speak the same language.

• They have the same interests.

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Why do dogs have most of the characteristics of their parents?

• They inherit them from their parents.

• They live in the same habitats as their parents.

• They learn them by observing their parents.

• They eat the same foods as their parents.

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Some people have a “hitchhiker’s” thumb that allows them to bend their thumbs more than other people. How do these people most likely get this trait?

• They learn it from friends.

• They inherit it from their parents.

• They get it as a result of an illness.

• They get it as a result of their jobs.

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Which is most likely the reason parents and their children have similar physical traits?

• They live in the same home.

• They have similar genetic structures.

• They are born in similar environments.

• They have similar blood types.

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Which characteristic is the best example of an inherited trait?

• short hair

• eye color

• pierced ears

• long fingernails

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A mother rabbit has a litter. One of the babies is born with one long ear and one short ear. What most likely caused this one rabbit to be born with one short ear?

• The mother rabbit had previously lost an ear in an accident.

• The mother rabbit became sick before she gave birth.

• A mutation occurred during the development of this one rabbit.

• This one rabbit received less nutrition than the other rabbits before it was born.

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NGSS.MS-LS3-1

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Which characteristic would a child not inherit from one or both of its parents?

• freckles

• hair style

• eye color

• dimples

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Which are examples of inherited traits?

• specific beliefs

• fingerprints

• memories

• nose shape

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