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Worksheets

Heredity

Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

If two alleles are the same for a certain trait they are considered

a)

Homozygous

b)

Twins

c)

Heterozygous

d)

Common

2.

Physical traits that are expressed are known as ____________

a)

Mutation

b)

Personality

c)

Genotype

d)

Phenotype

3.

The passage of genetic instructions from one generation to the next is known as

a)

Alleles

b)

Ancestry

c)

Heredity

d)

Variation

4.

The genes of an organism that are written with capital or lowercase letters

a)

Pant size

b)

Deoxyribonucleic acid

c)

Genotype

d)

Gretchentype

5.

If a certain trait has two different alleles (one dominant and one recessive) it is called __________________

a)

Homozygous

b)

Confused

c)

Differentiated

d)

Heterozygous

6.

When two pea plants with Tt genotypes are cross-bred, how many short (tt) plants will there most likely be in the new generation

a)

1 out of 4

b)

1 out of 2

c)

1 out of 6

d)

1 out of 8

7.

If a brown-eyed mother and a blue-eyed father have four children, three will probably have brown eyes. What can you conclude from this?

a)

Brown eyes are a successful trait

b)

Brown eyes are a submissive trait

c)

Brown eyes are a recessive trait

d)

Brown eyes are a dominant trait

8.

A red cow and a white cow when crossbred make roan (red and white) cows. This is an example of...

a)

Incomplete dominance

b)

Codominance

c)

Multiallelic

d)

Mendelian

9.

A red snapdragon flower and a white snapdragon flower when crossbred make pink snapdragon flowers. This is an example of...

a)

Incomplete dominance

b)

Codominance

c)

Multiallelic

d)

Mendelian

10.

Blood types have the alleles IA, IB, and i. This is an example of...

a)

Incomplete dominance

b)

Codominance

c)

Multiallelic

d)

Mendelian