2.7 Pedigree Analysis Mini Lesson and Closure Activity

A diagram that illustrates the inheritance of a trait through multiple generations in a family.

• A pedigree chart.

• A bar graph.

• A pie chart.

• A line graph.

Tags

NGSS.HS-LS3-1

The process by which genetic traits are passed from parents to offspring.

• inheritance

• mutation

• evolution

• adaptation

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Match the type of inheritance with its description: A type of inheritance where mostly males are affected, and there is no male-to-male transmission of the trait.

• Autosomal recessive

• Y-linked

• Y-linked

• Autosomal dominant

• Autosomal dominant

• X-linked recessive

• X-linked recessive

• Autosomal recessive

Indicate individuals who express the trait of interest.

• Filled Shapes in Pedigree

• Empty Shapes in Pedigree

• Half-filled Shapes in Pedigree

• Shapes with Dotted Lines in Pedigree

Match the following descriptions with their corresponding terms in pedigree analysis: 1. Indicate individuals who do not express the trait. 2. Connect mating individuals. 3. Connect parents to their offspring. 4. Indicate generations (I, II, III, etc.) in the pedigree.

• Individuals who do not express the trait

• Horizontal Lines in Pedigree

• Parents to their offspring

• Roman Numerals in Pedigree

• Generations in the pedigree

• Vertical Lines in Pedigree

• Mating individuals

• Empty Shapes in Pedigree

Fill in the blank: The number of individuals within a generation is represented by ______ (1, 2, 3, etc.).

• a number

• a letter

• a symbol

• a color

This trait appears to be a ​ (a)   trait.

• recessive
• dominate
• deadly

Tags

NGSS.HS-LS3-1

Label the correct parts

a

b

c

Oldest Generation

Expressed Trait

Current Generation

Tags

NGSS.HS-LS3-1

Click on the affected female in generation III.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Label the pedigree

b

c

d

e

a

Male carrier

Male with trait

Male without trait

Female with trait

Female without trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2