Pedigree Genetics

A genotype is

• the physical appearance of an organism.

• two alleles that an organism possesses.

A chart that tracks a trait or disorder in a family is called a...

• pedigree.

• Punnett square.

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

• Aa

• AA

• aa

• A?

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the mother (circle) in generation 1?

• Aa

• AA

• aa

• A?

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This is a pedigree that follows blue eyes which is a recessive trait. What is the phenotype of the mother (circle) in generation 1?

• Brown eyes

• Blue eyes

• 1 blue eye + 1 brown eye

• aa

Tags

NGSS.HS-LS3-1

This is a pedigree that follows blue eyes which is a recessive trait. What is the phenotype of the father (square) in generation 1?

• Brown

• Blue

• 1 blue eye + 1 brown eye

• Aa

Tags

NGSS.HS-LS3-1

This is a pedigree that follows blue eyes which is a recessive trait. What are the genotypes of the parents (1&2) in generation 2?

• Aa, AA

• aa, aa

• AA, AA

• Aa, Aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This is a pedigree that follows blue eyes which is a recessive trait. What are the genotypes of the parents (4&5) in generation 2?

• Aa, AA

• aa, aa

• AA, AA

• Aa, Aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

On a pedigree how do we know if they have the trait?

• Not shaded

• Shaded

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4