DNA and Genetics

What does heterozygous mean?

• Having two different alleles for the same trait.

• Having two identical alleles for the same trait

• An inherited trait that is shown even when inherited from only one parent.

• A genetic trait in which two copies must be present to be expressed. 

What is a genotype?

• The physical characteristic of a trait - what it looks like.

  (Brown eyes, freckles, blonde hair)

• One of the possible forms of a gene that governs a characteristic, such as hair color.

• The letter combination that makes up a trait (Bb, BB, bb)

• A characteristic that varies from one person to another.

What is an allele?

• A characteristic that varies from one person to another.

• One of the possible forms of a gene that governs a characteristic, such as hair color.

• The letter combination that makes up a trait (Bb, BB, bb)

• The physical characteristic of a trait - what it looks like.

  (Brown eyes, freckles, blonde hair)

What is a trait?

• The physical characteristic of a trait - what it looks like.

  (Brown eyes, freckles, blonde hair)

• The letter combination that makes up a trait (Bb, BB, bb)

• One of the possible forms of a gene that governs a characteristic, such as hair color.

• A characteristic that varies from one person to another.

What is a phenotype?

• The physical characteristic of a trait - what it looks like.

  (Brown eyes, freckles, blonde hair)

• The letter combination that makes up a trait (Bb, BB, bb)

• One of the possible forms of a gene that governs a characteristic such as hair color

• A characteristic that varies from one person to another.

What is a recessive trait?

• An inherited trait that is shown even when inherited from only one parent.

• Having two identical alleles for the same trait

• A genetic trait in which two copies must be present to be expressed. 

• Having two different alleles for the same trait.

What is a homozygous trait?

• Having two different alleles for the same trait.

• An inherited trait that is shown even when inherited from only one parent.

• A genetic trait in which two copies must be present to be expressed. 

• Having two identical alleles for the same trait

What is a gene?

• A genetic trait in which two copies must be present to be expressed. 

• The passing of genetic material from parents to offspring

• A segment of DNA that holds a set of instructions for an inherited trait

• All of the above

What is heredity?

• A tool used to predict possible breeding outcomes

• A segment of DNA that holds a set of instructions for an inherited trait

• A genetic trait in which two copies must be present to be expressed.

• The passing of genetic material from parents to offspring

What is a dominant trait?

• An inherited trait that is shown even when inherited from only one parent.

• Having two identical alleles for the same trait

• A genetic trait in which two copies must be present to be expressed. 

• Having two different alleles for the same trait.