Knowledge Check: Pedigrees

Match the following vocabulary terms:

• pedigree

• the first generation comprised of offspring(s) resulting from a cross between two individuals from parental generation

• P generation

• a diagram showing the lineage or genealogy of an individual and all the direct ancestors, usually to analyze or follow the inheritance of trait

• F1 generation

• the first set of parents crossed in which their genotype is the basis for predicting the genotype of their offspring, which in turn, may be crossed

• Punnett square

• a tool that helps to predict the probability of offspring possessing certain sets of alleles from their parents

Tags

NGSS.HS-LS3-2

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

What does a filled in square represent?

• Not affected Female
• Not affected Male
• Affected Male
• Affected Female

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

What does a horizontal line between a square and a circle mean?

• They are siblings
• They are cousins
• They are married ("together")
• They are the children

In the second generation-how many people are carriers of the trait?

• 2
• 3
• 5
• 6

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Which individual in the first generation is a carrier?

• The male
• The female
• individual 1
• None of the above

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1