Genetics and Heredity

Please choose the best definition for heredity.

• The passing of traits from parent to offspring.

• The study of how traits are passed from parent to offspring.

• The genetic material inside the nucleus of a cell.

• A characteristic that a parents passes on to their offspring.

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NGSS.HS-LS3-1

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Mac is telling Jameson that he has freckles on his face. What is this an example of?

• Freckles are an example of a chromosome.

• Freckles are an example of an allele.

• Freckles are an example of a genetic trait.

• Freckles are an example of mitosis.

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NGSS.MS-LS4-4

Heredity is the passing of traits from parents to their offspring. What is the scientific study of heredity called?

• Chromosome is the scientific study of heredity.

• DNA is the scientific study of heredity.

• Allele is the scientific study of heredity.

• Genetics is the scientific study of heredity.

Each of your genes is made of two ____________. One comes from your mother, and the other comes from your father.

• chromosomes

• alleles

• cells

• DNA

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NGSS.HS-LS3-1

If you have a dominant allele for a certain trait and a recessive allele for a certain trait, which trait will you have?

• You will have the recessive trait, because the recessive allele for that trait is the one that will be expressed.

• You will have the dominant trait, because the dominant allele for that trait is the one that will be expressed.

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NGSS.HS-LS3-1

Jarrod does not have dimples, which is a recessive trait. What type of alleles make up the gene for that trait in Jarrod's chromosomes?

• Jarrod has two recessive alleles for that trait, because that is the only way that a recessive trait can be expressed.

• Jarrod has two dominant alleles for that trait, because that is the only way that a recessive trait can be expressed.

• Jarrod has one dominant and one recessive allele for that trait, because that is the only way that a recessive trait can be expressed.

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NGSS.HS-LS3-1

What is fertilization?

• the moment when one cell splits into two cells

• the scientific study of heredity

• the moment when an egg cell and a sperm cell join to make a new organism

Miguel is a purebred for a certain genetic trait. What does that mean?

• Miguel has two of the same alleles for that trait.

• Miguel has two different alleles for that trait.

Alyssa is a hybrid for a certain genetic trait. What does that mean?

• This means that Alyssa has two different alleles for that trait.

• This means that Alyssa has two of the same alleles for that trait.

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NGSS.HS-LS3-1

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Micah has one dominant allele for a certain trait, and one recessive allele for a certain trait. Which trait will be expressed?

• The recessive trait will be expressed.

• The dominant trait will be expressed.