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Worksheets

Pedigrees

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

This pedigree shows the disease of cystic fibrosis, a dissease where mucus devleops in the lungs. Based on the pedigree, is this condition dominant or recessive?

a)

Dominant

b)

Recessive

2.

What is the genotype for individual I-1?

a)

aa

b)

AA

c)

Aa

3.

What is the genotype for individual II-4?

a)

aa

b)

AA

c)

Aa

4.

What is the genotype for individual II-7?

a)

AA

b)

Aa

c)

aa

5.

What is the phenotype for individual I-2?

a)

normal

b)

carrier

c)

cystic fibrosis

6.

What is the phenotype for individual II-5?

a)

Normal

b)

Carrier

c)

Cystic Fibrosis

7.

What is the phenotype for II-6?

a)

Normal

b)

Carrier

c)

Cystic Fibrosis

8.

How many daughters did I1 and I2 have?

a)

1

b)

2

c)

3

d)

4

9.

This NEW pedigree shows the condition of albinism, which is a deficiency of pigmentation in the hair and skin. Based on the pedigree, is albinism dominant or recessive?

a)

Dominant

b)

Recessive

10.

What is the genotype of individual I1?

a)

AA

b)

Aa

c)

aa

11.

What is the genotype of individual II-8?

a)

AA

b)

Aa

c)

aa

12.

What is the genotype of individual III-9?

a)

AA

b)

Aa

c)

aa

13.

What is the genotype of individual III-13?

a)

AA

b)

Aa

c)

aa

14.

How are II-5 and II-7 related?

a)

cousins

b)

married

c)

siblings

d)

uncle/nephew

15.

If you cross two heterozygous individuals, what possible genotypes exist for the offspring?

a)

Aa

b)

aa and AA

c)

AA, Aa, and aa

d)

Aa and aa

16.

True or false: Crossing a homozygous recessive male and homozygous dominant female results in 100% heterozygous offspring.

a)

True

b)

False

17.

True or false: Carriers can exist for both dominant and recessive conditions

a)

True

b)

False

18.

Which genotype must you have in order to be considered a carrier?

a)

Homozygous dominant

b)

Homozygous recessive

c)

Heterozygous

19.

Which type of trait (dominant or recessive) usually skips a generation?

a)

Dominant

b)

Recessive

20.

What makes Ms. Hurlbutt and Mrs. Hariri so cool?

a)

our Dutch Bros obsession

b)

our "quirky" sense of humor

c)

matching outfits

d)

constant interruptions into your classrooms