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Punnett Square Credit Genetics and Punnett squares

Total questions: 12

Worksheet time: 9mins

Name
Class
Date
1.

Capital letter; trait is always shown

a)

Recessive

b)

Dominate

c)

Homozygous

d)

Heterozygous

2.

Lowercase letter; trait hidden when paired with dominant allele

a)

Recessive

b)

Dominate

c)

Homozygous

d)

Heterozygous

3.

Whose traits are on the outside (top and side) of the Punnett square?

a)

Grandparents

b)

Offspring

c)

Parents

d)

Aunts and Uncles

4.

Look at the Punnett square. What is the percent chance of having the recessive Phenotype (trait)?

a)

25%

b)

50%

c)

75%

d)

100%

5.

Look at the Punnett square. What is the percent chance of the offspring being heterozygous?

a)

0%

b)

25%

c)

50%

d)

100%

6.

Look at the Punnett square. What percent of the offspring are homozygous dominant?

a)

0%

b)

25%

c)

50%

d)

100%

7.

Look at the Punnett square. What is the top parent's genotype?

a)

Homozygous Dominate

b)

Heterozygous

c)

Homozygous Recessive

d)

Superzygous

8.

Look at the Punnett square. What is the side parent's genotype?

a)

Homozygous Dominate

b)

Heterozygous

c)

Homozygous Recessive

d)

Superzygous

9.

Which term means how an organism looks / physical appearance?

a)

Genotype

b)

Phenotype

c)

Homozygous

d)

Heterozygous

10.

Which term means the organism's genes; represented by two letters?

a)

Genotype

b)

Phenotype

c)

Long eyelashes

d)

Brown eyes

11.

Which of the following genotypes would be homozygous recessive?

a)

RR

b)

Rr

c)

rr

d)

none of the above

12.

Which of the following genotypes would be heterozygous?

a)

RR

b)

Rr

c)

rr

d)

none of the above