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Types of Dominance Practice Activity

Total questions: 22

Worksheet time: 29mins

Name
Class
Date
1.

When a long-hair angora rabbit is bred with a short-hair rex rabbit, the offspring have hair that is medium length. What type of inheritance is this?

a)

Incomplete Dominance

b)

Complete Dominance

c)

Codominance

2.

How are incomplete dominance and codominance different than complete dominance?

a)

There are multiple recessive phenotypes

b)

The heterozygous genotype shows a unique phenotype

c)

Multiple genes influence the same trait

d)

There is no heterozygous genotype or phenotype

3.

A black sheep is bred with a white sheep. All of their offspring have a phenotype of gray coats. What is the most likely pattern of inheritance for coat color in sheep?

a)

Codominance

b)

Lethal Allele Inheritance

c)

Complete dominance

d)

Incomplete dominance

4.

In humans, three alleles affect blood type. The A and B alleles are codominant and the O allele is recessive. Which of the following statements about human blood types are TRUE?

a)

The O blood type will always be expressed in a human's phenotype.

b)

Human blood type is an example of incomplete dominance.

c)

The A and B alleles will both be expressed in the heterozygote's phenotype.

d)

A human will inherit all three alleles from their mom and dad.

5.

The phenotype of a heterozygote is a mix between both traits is explaining which type of dominance?

a)

Codominance

b)

Incomplete Dominance

c)

Complete Dominance

6.

The phenotype of a heterozygote is that of the dominant allele always shows over the recessive one is explaining which type of dominance?

a)

Codominance

b)

Incomplete Dominance

c)

Complete Dominance

7.

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

a)

Incomplete Dominance

b)

Codominance

c)

Complete Dominance

8.

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?

a)

0%

b)

25%

c)

50%

d)

100%

9.

In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of red (RR) and white (rr) homozygotes. Which of the following crosses would produce offspring in the ratio of 1 red : 2 roan : 1 white?

a)

Red mom x Red dad

b)

Roan mom x Roan dad

c)

White mom x Roan dad

d)

Red mom x Roan dad

10.

The red and white camellia flower below is an example of which type of dominance?

a)

Complete Dominance

b)

Incomplete Dominance

c)

Codominance

11.

A hen lays four eggs. When they hatch, one of the chicks has black feathers, two have speckled feathers, and one has white feathers. What must the genotypes of the parents be?

a)

CWCW and CBCW

b)

CWCW and CWCW

c)

CBCW and CBCW

d)

CBCB and CBCB

12.

The pink carnation flower below is an example of which type of dominance?

a)

Complete Dominance

b)

Incomplete Dominance

c)

Codominance

13.

In the image above, the trait for flower color is controlled by codominance. R codes for red flowers and W codes for white flowers. Which of the following correctly reports the phenotypes?

a)

100% red flowers

b)

50% white flowers and 50% pink flowers

c)

50% red flowers and 50% red and white flowers

d)

50% white flowers and 50% red flowers

14.

This type of dominance is ........................... because the heterozygote shows a phenotype that is .............................. .

a)

co-dominance, blended

b)

co-dominance, equal

c)

incomplete dominance, blended

d)

incomplete dominance, equal

15.

This is an example of ___________.

a)

Incomplete Dominance

b)

Codominance

c)

Complete Dominance

16.

If you cross a black chicken with a white chicken, only checkered chickens would be produced. What kind of inheritance pattern does this follow?

a)

Incomplete Dominance

b)

Co-Dominance

c)

Complete Dominance

17.

What type of inheritance is shown?

a)

Complete Dominance

b)

Incomplete Dominance

c)

Codominance

18.

What do you call the inheritance pattern that states that neither trait is dominant and the traits appear to blend together?

a)

Codominance

b)

Incomplete dominance

c)

Complete Dominance

19.

In a heterozygous offspring, there is a blending of the traits.

a)

Codominance

b)

Incomplete Dominance

c)

Complete Dominance

20.

In a heterozygous offspring, both traits are expressed at the same time.

a)

Codominance

b)

Incomplete dominance

c)

Complete Dominance

21.

A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:

a)

all black

b)

all white

c)

all gray

d)

speckled black and white

22.

This is an example of ___________?

a)

Incomplete dominance

b)

Codominance

c)

Complete Dominance