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Mendel Incomplete Codominance

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

This is an example of ___________?

a)

Incomplete dominance

b)

Co-Dominance

c)

Complete dominance

2.

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

a)

Codominance

b)

Incomplete dominance

c)

Polygenic traits

3.

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)

Independent assortment

d)

Recessive inheritance

4.

This flower would be an example of which inheritance pattern?

a)

polygenic traits

b)

incomplete dominance

c)

multiple alleles

d)

codominance

5.

This type of inheritance pattern shows BOTH traits in possible offspring

a)

complete dominance

b)

incomplete dominance

c)

co-dominance

d)

dominant pattern

6.

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

7.

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

a)

Codominance

b)

Incomplete Dominance

c)

Complete Dominance

8.

This rooster's mother was all black and its father had all white feathers. What type of inheritance explains its appearance?

a)

simple dominant/recessive

b)

epistasis

c)

incomplete dominance

d)

codominance

9.

In Mendel's experiments, which type of dominance is characterized by the blending of traits in the heterozygous state?

a)

Codominance

b)

Incomplete Dominance

c)

Complete Dominance

d)

Overdominance

10.

Which of the following is an example of codominance in plants?

a)

A red and white flower producing pink offspring

b)

A red flower and a white flower producing red and white striped offspring

c)

A red flower producing only red offspring

d)

A white flower producing only white offspring

11.

In a genetic cross involving incomplete dominance, what would be the expected phenotype ratio in the F2 generation?

a)

1:2:1

b)

3:1

c)

9:3:3:1

d)

1:1

12.

Which of the following best describes the phenotype of a heterozygous individual in a case of incomplete dominance?

a)

A blend of both parental traits

b)

Only the dominant trait is expressed

c)

Both parental traits are fully expressed

d)

Neither trait is expressed

13.

In a codominant inheritance pattern, what would be the phenotype of an organism with genotype R1R2R^1R^2 , where R1R^1 codes for red color and R2R^2 codes for white color?

a)

All red

b)

All white

c)

Red and white patches

d)

Pink

14.

Which experiment would best demonstrate incomplete dominance?

a)

Crossing red and white snapdragons to produce pink offspring

b)

Crossing red and white roses to produce red and white striped offspring

c)

Crossing two red flowers to produce only red offspring

d)

Crossing two white flowers to produce only white offspring

15.

In a case of codominance, if a black chicken and a white chicken are crossed, what is the expected phenotype of the offspring?

a)

All black

b)

All white

c)

All gray

d)

Speckled black and white