wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Test - Introduction to Genetics

Total questions: 20

Worksheet time: 19mins

Name
Class
Date
1.

The molecule that is the blueprint or code for all of the characteristics in our body is called?

a)

Protein

b)

DNA

c)

Glucose

2.

The different forms of a gene are called ____.

a)

Traits

b)

Hybrids

c)

Alleles

3.

If an organism has the following combination of alleles for a gene, AA, are they heterozygous or homozygous for that gene?

a)

Homozygous

b)

Heterozygous

4.

The traits that are caused by an organism's combination of genes is called it's:

a)

Genotype

b)

Phenotype

5.

The combination of genes an organism has is called it's:

a)

Genotype

b)

Phenotype

6.

Every individual has this number of alleles for every gene.

a)

1

b)
2
c)

3

d)

4

7.

In humans, freckles is a dominant trait. A person is heterozygous for this gene. What would be this person's genotype?

a)

FF

b)

Ff

c)

ff

8.

What genetic disorder afflicted members of Queen Victoria's family, including Prince Leopold and Czarina Alexandra's son Alexis?

a)

Sickle cell anemia

b)

Hemophilia

c)

Down syndrome

d)

Cystic fibrosis

9.

What does a horizontal line between a circle and a square represent in the pedigree chart?

a)

Siblings

b)

Mates

c)

Offspring

d)

Unrelated individuals

10.

What is a conclusion from the pedigree of the European royal families?

a)

Hemophillia mostly affected males.

b)

Males could carry the genetics for hemophilia but still be normal and unaffected.

11.

In our rabbit activity we are tracking the gene for ear type through our family trees that we are making. No matter what combination of the gene a rabbit had, if they had a copy of the straight ear gene, the rabbit had straight ears. The straight ear gene is:

a)

Dominant

b)

Recessive

12.

If a rabbit in our activity inherited a copy of the gene for straight ears and a copy of the gene for floppy ears, we would say that they are ________ for this gene.

a)

Homozygous

b)

Heterozygous

13.

Which of the following would complete this Punnett Square?

a)

aa

b)

AA

c)

Aa

14.

Brown eyes are dominant (B) to blue (b). If Parent A (bb) and Parent B (Bb) have a child, what is the likelihood that the child will have brown eyes?

a)

25%

b)

50%

c)

75%

d)

100%

15.

The picture shows a cross between two parents that have freckles. What are the chances that they have children with freckles?

a)

25%

b)

50%

c)

75%

d)

100%

16.

The Punnett square shows a dihybrid cross. What goes in box 12?

a)
AABb
b)
AABB
c)
aabb
d)

AaBB

17.

If a rabbit is homozygous dominant for hair color and homozygous recessive for eye color, what is their genotype? ​ ​

In rabbits, grey fur (G) is dominant to white fur (g).

Also in rabbits, black eyes (B) are dominant to red eyes (b).

a)
GgBb
b)
ggBB
c)
Ggbb
d)
GGbb
18.

Using FOIL on an AaBB genotype, which answer would give us the correct four possible gametes.

a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
19.

If you cross a black chicken with a white chicken and only black AND white feathered chickens are produced, then feather color follows the inheritance pattern of ___.

a)

Incomplete dominance

b)

Codominance

20.

____ is an inheritance pattern that results in offspring that are a MIXTURE of the two traits of its parents, like red flower plants and white flower plants making pink flower offspring.

a)

Incomplete dominance.

b)

Codominance