Genetics Tiffany Lester

What is a dominant gene?

• A trait that is observed when there are one OR two copies of the allele

• A trait that is observed only when there are two copies of the allele

• A trait that can be hidden in a generation

Tags

NGSS.HS-LS3-1

Using the Punnett Square, identify the correct Genotypic ratio

• 2:2:1

• 1:2:1

• 2:1:1

• 1:1:1

What is a trait?

• A physical characteristic passed down from your mom

• A behavioral characteristic passed down from your dad

• A physical or behavioral characteristic passed down from your parents

• A behavioral characteristic passed down by your mom

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is a genotype?

• Pair of alleles that determine a specific trait

• Observable physical trait

• A trait that is observed with only one copy of an allele

Tags

NGSS.HS-LS3-1

What is a phenotype?

• Pair of alleles that determine a trait

• Observable physical trait

• Different forms of a gene

A person who is homozygous for a trait can have a genotype of....

• AA, Aa

• Aa, aa

• AA, aa

• aa

Tags

NGSS.HS-LS3-1

If a person is heterozygous for a trait, their genotype can be...

• Aa

• AA, aa

• AA, Aa

• AA

If "B" represents brown hair, and "b" represents blond hair, what will the genotype be for a homozygous brown haired person?

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-1

If a person is heterozygous for brown hair, what is their genotype?

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-2

Heterozygous: Different, Homozygous:_____________

• The same

• Less Than

• Greater Than

• 4 copies