Pedigree

Multiple Choice

What is a Pedigree Chart?

• A table which all of the possible outcomes for a offspring.

• A chart of the genetic history of a family over several generations

• A chart that shows where families have lived over a period of time.

• A table that allows us to determine the traits offsprings will have.

​Generations are expressed as the people that are born and living at the same time time period.

Ex: 4 GENERATIONS ARE SHOWED IN THE CHART BELOW​

​I​

II

​

II​

IV​

Multiple Choice

How many generations are in this pedigree?

• 1

• 2

• 3

• 4

Multiple Choice

How many males are in this pedigree?

• 7

• 6

• 5

• 8

Multiple Choice

How many females are in this pedigree?

• 7

• 6

• 5

• 8

Fill in the Blank

The ________ means that person has the trait

Open Ended

Explain how you are able to tell is a trait is dominant and recessive.

Multiple Choice

Alleles are expressed using letters. Which of the following shows a homozygous allele?

• TT

• Tt

• Rt

• tTt

Multiple Choice

Alleles are expressed using letters. Which of the following shows a heterozygous allele?

• TT

• Tt

• Rt

• tTt

Multiple Choice

The previous chart showed dominant or recessive traits?

• Dominant

• Recessive

Multiple Choice

The previous chart showed dominant or recessive traits?

• Dominant

• Recessive

Open Ended

A pedigree chart can be very simple. What do you think will be the hardest part for you to understand when learning about pedigrees?