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Genetics Quiz (Reg. 2020)

Total questions: 23

Worksheet time: 14mins

Name
Class
Date
1.

Gene combination involving 2 dominant or 2 recessive genes.

a)

Genotype

b)

Phenotype

c)

Homozygous

d)

Heterozygous

2.

Genetic combination of a traits (alleles).

a)

Genotype

b)

Phenotype

c)

Homozygous

d)

Heterozygous

3.

Physical feature resulting from a genotype.

a)

Genotype

b)

Phenotype

c)

Homozygous

d)

Heterozygous

4.

Gene combination of one dominant and one recessive allele.

a)

Homozygous Dominant

b)

Homozygous recessive

c)

Heterozygous

d)

Heterosexual

5.

The trait that is hidden by the dominant allele is considered.

a)

Homozygous

b)

Recessive

c)

Heterozygous

d)

Dominant

6.

The stronger of the two genes in a heterozygous pair is ________.

a)

Purebred

b)

Hybrid

c)

Dominant

d)

Recessive

7.

The diagram used to predict the a particular cross is called a _____________.

a)

Karyotype

b)

Punnett Square

c)

Flow Chart

d)

Venn Diagram

8.

Which of the following is a heterozygous genotype.

a)

GG

b)

Gg

c)

gg

d)

Green grass

9.

Which of the following is a homozygous Genotype?

a)

Hybrid

b)

Pink flowers

c)

aa

d)

Hh

10.

Which of the following is a phenotype in humans?

a)

GG

b)

Dimples

c)

Gg

d)

Blue Blood

11.

Which of the following is a homozygous dominant Genotype?

a)

Black

b)

BB

c)

Bb

d)

bb

12.

Which of the following is a homozygous recessive Genotype?

a)

White

b)

BB

c)

Bb

d)

bb

13.

What is the genotypic ratio in the punnett square shown?

a)

75% Recessive

b)

75% Purple, 25% white

c)

25: 50: 25 or 1:2:1

d)

100% Heterozygous

14.

What is the missing genotype in the punnet square shown?

a)

AA

b)

Aa

c)

aa

15.

Sperm and eggs are examples of ____________________.

a)

Chromosomes

b)

Autosomes

c)

Gametes

d)

Somatic Cells

16.

The blending of two traits in which one is not completely dominant over the other is known as ---

a)

incomplete dominance

b)

codominance

17.

What type of inheritance pattern is shown here?

a)

Codominance

b)

Incomplete dominance

18.

What type of inheritance pattern do two alleles for a gene follow if their traits blend together on the offspring?

a)

Incomplete dominance

b)

Codominance

19.

The green fish offspring in this image is an example of ---

a)

Incomplete dominance

b)

Codominance

20.

This cow with brown and white spots is an example of ---

a)

Incomplete dominance

b)

Codominance

21.

What do the phenotypes of the offspring in this Punnett square represent?

a)

incomplete dominance

b)

codominance

22.

Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring represented in this P square will be calico (black and tan spotted)?

a)

25%

b)

50%

c)

75%

d)

100%

23.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?

a)

25

b)

50

c)

0

d)

100