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Shmoop Study Guides
(Sunnyvale - United States)

Shmoop wants to make you a better lover (of literature, history, poetry and writing). See many sides to the argument. Find your writing groove. Understand how lit and history are relevant today. We want to show your brain a good time.  Our mission: To make  ...

Worksheet: Dominant, Recessive, Homozygous, Heterozygous

Dominant / Recessive / Homozygous / Heterozygous

Define and write an example of each of the following:

GENE:

 

ALLELE:

 

DOMINANT:

 

RECESSIVE:

 

HOMOZYGOUS:

 

HETEROZYGOUS:

 

Use the following information to answer the questions that follow

 

TRAIT

DOMINANT ALLELE

RECESSIVE ALLELE

Height

Tall (T)

Short (t)

Eye Color

Brown (B)

Pink (b)

Hair Color

Red (R)

Blonde (r)

 

1.    Write the genotype for a homozygous tall person ___________________________________

2.    Write the genotype for a heterozygous red-haired person _______________________________

3.    Write all the possible genotypes for a brown-eyed person_________________________________

4.    Write the genotype for a pink-eyed person _____________________________________________

5.    Write the genotype for a homozygous brown-eyed, tall person _____________________________

6.    Write the genotype for a person that is heterozygous hair and eye color ___________________

7.    Write the genotype for a person that is blonde, pink-eyed, and short________________________