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Day 03: Quizizz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

The alleles for different traits are sorted separately and do not affect one another:

a)

Law of Dominance

b)

Law of Independent Assortment

c)

Law of Conservation of Matter

d)

Law of Segregation

2.

One allele is stronger and will be expressed over another:

a)

Law of Dominance

b)

Law of Independent Assortment

c)

Law of Conservation of Matter

d)

Law of Segregation

3.

Mice coat color shows incomplete dominance.
Black (B) and white (W) are homozygous; gray mice are heterozygous.

What is the genotype for a Gray mouse?

a)

BB

b)

BW

c)

Brown

d)

WW

4.

A particular species of flower shows incomplete dominance concerning petal color.
A red-flowered plant (RR) is crossed with a white-flowered plant (WW).
What percentage of the offspring will have red (RR) flowers?

a)

0%

b)

25%

c)

50%

d)

100%

5.

Some flowers are controlled by codominance.

Red flowers (RR), blue flowers (BB), and speckled flowers (RB).

Cross a red flower with a speckled flower, and give the phenotypic ratio.

a)

2 red: 2 speckled

b)

2 red: 2 blue

c)

2 blue: 2 speckled

d)

1 red: 2 speckled: 1 blue

6.

This image is an example of:

a)
codominance
b)

simple dominance

c)
incomplete dominance
d)

multiple alleles

7.

This image is an example of:

a)
codominance
b)
dominance
c)
incomplete dominance
d)

multiple alleles

8.

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

a)

incomplete dominance

b)

codominance

c)

independent assortment

d)

recessive inheritance

9.

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 & white

10.

In some carnations, flower color exhibits codominance.
When crossed, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between two speckled flowers and find the genotype ratio.

a)
0 RR: 4 RW: 0 WW
b)
2 RR: 2 RW: 0 WW
c)
1 RR: 2 RW: 1 WW
d)
0 RR: 2 RW: 2 WW
11.

Which of the following is not true of dominant genes?

a)

Dominant genes are always expressed wherever they are present.

b)

A dominant gene will overpower all other genes to be the only one expressed.

c)

Two dominant genes can be expressed together in a situation of codominance.

d)

None of the above.

12.

The offspring's phenotype is an intermediate (blended) phenotype of the two parental phenotypes:

a)

incomplete dominance

b)

codominance

c)

complete dominance

d)

recessive inheritance

13.

The offspring's phenotype has independent and equal expression of both parental phenotypes:

a)

incomplete dominance

b)

codominance

c)

complete dominance

d)

recessive inheritance

14.

A plant shows incomplete dominance in size.

A tall plant (TT) is crossed with a medium plant (TS).

What fraction of plants will also be tall?

a)

100%

b)
75%
c)
50%
d)
25%
15.

This image shows an incomplete dominant cross.

(D) codes for straight hair in dogs and (d) codes for curly hair.
The blended trait is wavy hair.
Which of the following statements is true about the offspring?

a)

Only the heterozygous genotype can code for wavy hair.

b)

Only the homozygous dominant genotype can code for wavy hair.

c)

Only the homozygous recessive genotype can code for wavy hair.

d)

The homozygous recessive & homozygous dominant genotypes can code for wavy hair.

16.

What type of inheritance pattern is shown in the image?

a)

codominance

b)

incomplete dominance

c)

simple dominance

d)

multiple alleles

17.

Codominance occurs in cats, which allows for the calico (black & tan) colors to show.
What percentage of the offspring will be calico?

a)

25%

b)

50%

c)

75%

d)

100%

18.

Codomiance occurs in chickens, which allows them to have black, white, or black & white feathers.
What percentage of the offspring will be black?

a)

25%

b)

50%

c)

75%

d)

100%

19.

Codominance occurs in chickens, which allows them to have black, white, or black & white feathers.
What percentage of offspring will have white feathers?

a)

25%

b)

50%

c)

75%

d)

100%

20.

In cattle, red and white are codominant. If you cross two red and white cattle, what percentage of offspring will express the same genotype as their parents?

a)

25%

b)

50%

c)

75%

d)

100%