Pedigree Introduction 2025-26

Open Ended

How can pedigree charts help scientists and doctors in understanding hereditary conditions?

Multiple Choice

Why is it important to study pedigree charts in genetics?

• To understand the inheritance of traits and diseases

• To memorize family names

• To learn about ancient history

• To create artistic family trees

Open Ended

Explain how pedigree charts help genetic counsellors in determining the distribution of a disease within a family.

Multiple Choice

Which of the following is an ethical way to study human genetics?

• Breeding humans of different types

• Using pedigree charts

• Genetic engineering on humans

• Ignoring genetic diseases

Multiple Choice

Which symbols are used to represent males, females, and individuals with a trait in a pedigree chart?

• Circle for male, square for female, shaded for trait

• Square for male, circle for female, shaded for trait

• Circle for female, square for male, unshaded for trait

• Square for female, circle for male, unshaded for trait

Multiple Choice

What is the significance of Roman numerals in a pedigree chart?

• They indicate the gender of individuals.

• They label each generation in the pedigree.

• They show affected individuals.

• They represent genetic traits.

Labelling

Label the correct parts

Drag labels to their correct position on the image

Expressed Trait

Current Generation

Oldest Generation

Open Ended

Explain how siblings are represented in a pedigree chart and why their order is important.

Multiple Select

Which of the following statements about dominant and recessive traits are correct?

• Dominant traits appear in the F1 generation.

• Recessive traits are masked in the F1 generation.

• Recessive traits reappear in the F2 generation.

• Dominant traits are always visible in every generation.

Hotspot

Click on the affected female in generation III.

Labelling

Label the pedigree

Drag labels to their correct position on the image

Female without trait

Male with trait

Male without trait

Female with trait

Male carrier

Hotspot

Select person II-4