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Worksheets

Genetic Terms - Practice

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following is homozygous recessive?

a)

Rr

b)

RR

c)

rr

d)

All of them

2.

Brown (B) is dominant over white (b). Which is a homozygous GENOTYPE of BROWN FUR?

a)

BB

b)

Bb

c)

bb

d)

B

3.

Which term describes the different forms of a gene?

a)

Chromosome

b)

Allele

c)

DNA

d)

Punnett Squares

4.

This image shows a

a)

Phenotype

b)

Punnett Square

c)

Homozygous Dominant gentotype

d)

Pedigree

5.

What does a Punnett Square do?

a)

Show the possible genotypes

b)

Determine the possible phenotypes

c)

Predict offspring traits

d)

All of the above

6.

A phenotype is

a)

Physical appearence

b)

Dominance

c)

Recessiveness

d)

Letter combinatons

7.

What is a gene?

a)

They cause disease

b)

What you wear to parties

c)

Segment of DNA coding for a trait

d)

It is what DNA is made up of

8.

What is an allele?

a)

A gene

b)

A genotype

c)

A phenotype

d)

Different forms of a gene

9.

If your genotype for tongue rolling ability is TT, you are

a)

homozygous dominant.

b)

heterozygous dominant.

c)

homozygous recessive.

d)

heterozygous recessive.

10.

If your genotype for tongue rolling ability is Tt, you are

a)

homozygous dominant.

b)

heterozygous.

c)

homozygous recessive.

d)

heterozygous recessive.

11.

If your genotype for tongue rolling ability is tt, you are

a)

homozygous dominant.

b)

heterozygous dominant.

c)

homozygous recessive.

d)

heterozygous recessive.

12.

Brown fur (B) is dominant to pink fur (b). Which is a genotype for brown fur?

a)

Brown

b)

Pink

c)

BB

d)

bb

13.

Brown fur (B) is dominant to pink fur (b). Which is the genotype for pink fur?

a)

Brown

b)

Pink

c)

BB

d)

bb

14.

Brown fur (B) is dominant to pink fur (b). Which is the phenotype for bb?

a)

Brown

b)

Pink

c)

BB

d)

bb

15.

Brown fur (B) is dominant to pink fur (b). Which is the phenotype for Bb?

a)

Brown

b)

Pink

c)

BB

d)

bb

16.

The genotype for a moon flower plant is Rr. The dominant allele is represented by...

a)

R

b)

r

c)

Red

d)

White

17.

The genotype for a moon flower plant is Rr. The recessive allele is represented by...

a)

R

b)

r

c)

Red

d)

White

18.

The genotype for a moon flower plant is Rr. The phenotype of the plant is...

a)

R

b)

r

c)

Red

d)

White

19.

The genotype for a moon flower plant is RR. The phenotype of the plant is...

a)

R

b)

r

c)

Red

d)

White

20.

The genotype for a moon flower plant is rr. The phenotype of the plant is...

a)

R

b)

r

c)

Red

d)

White