Genetics Worksheet

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Genetics Worksheet II
Name: ______________________
Use your knowledge of genetics to complete this worksheet.
1. For each genotype listed, write the phenotype that would be visible.
Trait
Dominant Gene
Recessive Gene
EE ________________
Cc ________________
Hair Style
Straight (S)
Curly (s)
oo ________________
ee ________________
Face Shape
Oval (O)
Round (o)
Ss ________________
ss ________________
Chin Shape
Normal (C)
Receding (c)
CC ________________
Oo ________________
Eye Size
Large Eyes (E)
Small Eye (e)
2. Use the information in chart # 1 to write the genotype(s) for each trait below.
Straight Hair ________________
Curly Hair
________________
Oval Face
________________
Round Face
________________
Normal Chin ________________
Receding Chin
________________
Large Eyes
________________
Small Eyes
________________
3. Determine the genotypes for each using the information in the chart in # 1.
Heterozygous large eyes: _________
Homozygous receding chin: _________
Purebred straight hair: _________
Hybrid oval face: _________
4. Abe recently met a curly haired girl, Emma, at the dance and fell in love. Use your
knowledge of genetics to answer the questions below.
A. What is Emma’s genotype? ________
B. Abe is heterozygous for his straight hair. What is his genotype? ______
C. Complete the Punnett square to show the possibilities
that would result if Abe & Emma had children.
D. List the possible genotypes & phenotypes of the
children.
E. What is the probability of kids with straight hair? ______%
F. What is the probability of kids with curly hair? ______%

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