Easter Shell Genetics Worksheet
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3Don’t Judge An Egg By Its Shell:
A lesson in Easter Egg genetics.
Just because we can see the exterior color of Easter Eggs, doesn’t always mean
that we can determine what color candy will be inside. In this activity, you will
choose different colored eggs and determine what genotypes caused those colors.
The colors of the eggs (blue, yellow, pink, purple, green, or orange) represent
phenotypes. The 2 pieces of candy that are inside the eggs represent the
genotype for that phenotype. You will then determine what the possible genotype
combinations of the “parent” eggs produced the “baby” eggs you have chosen.
Genotype Reference Chart:
Egg Color
Skittle Color
Allele
(Phenotype)
(Genotype)
Purple
Purple or
EE or Ee
Pink/Purple
Pink
Pink
ee
Blue
Blue or
BB or Bb
Blue/Yellow
Yellow
Yellow
bb
Green
Green or
GG or Gg
Green/Orange
Orange
Orange
gg
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