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Codominance Review (Need Scratch Paper)

Total questions: 9

Worksheet time: 18mins

Name
Class
Date
1.

A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---

a)

Codominance

b)

Incomplete dominance

2.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
3.

What is the genotype for the flower in the picture?

a)

TT

b)

CRCW

c)

CwCw

d)

Tt

e)

CRCR

4.

If you cross the flower in the picture with another flower of the same phenotype, what is the percent change of getting pure red flowers?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

5.

If a red bug and a white bug mate, their babies have red and white spots. This is most likely due to what pattern of inheritance?

a)

incomplete dominance

b)

codominance

c)

polygenic inheritance

d)

compete dominance

6.

Codominance sometimes uses superscripts for alleles. Which is an example of codominant alleles?

a)

CRCW

b)

RW

c)

CRCW

d)

CC

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)
Co dominance
8.

In chickens, feather color is codominant. If a black chicken (CBCB) is mated with one that is black and white (CBCW) what are the chances of having a chicken that is black and white?

a)

50%

b)

0%

c)

25%

d)

100%

9.

In some carnations, flower color exhibits codominance. Identify the correct genotypes for red, white, and speckled carnations.

a)

Red = CRCR, white = CWCW, speckled = CRCW

b)

Red = CRCR,white = WW, speckled = rw

c)

Red = RR, white = CwCW, Speckled = CRCW

d)

Red = RR, white = WW, speckled = RW