Monster Genetics Lab
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2Name ____________________________
Date: ___________
Class Period
P a g e | 1
Monster Genetics Lab
[Note: The two lab activities allow students to apply their knowledge of simple and complex
genetic traits. Students demonstrate how they are able to apply and synthesize what they have
learned in a fun activity. If possible, allow students to illustrate both parent and child monsters
based on the genetic information identified for all three monsters during the lab.]
You have learned about many different patterns of inheritance. Some are simple dominant or
recessive, as in Mendelian traits. Some are more complex, such as incomplete dominant or
codominant traits. In this lab you will investigate how a combination of these genes works to
create an organism.
Part 1 Procedure:
1. Flip a coin twice to determine the genotype for each trait and record it in the data table.
Heads = allele 1, Tails = allele 2 (Example: if you flipped heads twice, your monster
will have two copies of allele 1 for his genotype.)
2. Determine the phenotype resulting from the allele pair for each trait.
3. Repeat steps 1‐2 for each trait and complete the female monster’s Table 1.
Table 1: Genotypes & Phenotypes for Female Monster
Trait
Allele 1
Allele 2
Genotype
Phenotype
Eye
Two small eyes (E)
One large eye (e)
Eye Color
Red (R)
White (R’)
(incomplete)
Skin Color
Green (G)
Blue (B)
(codominant)
Tail Shape
Curly (C)
Straight (c)
Tail Color
Purple (P)
Orange (p)
Tail
Have tail (T)
No tail (t)
(regulatory gene)
Teeth
Sharp (S)
Round (s)
Feet
Four toes (F)
Two toes (F’)
(incomplete)
Horn Color
Purple (W)
White (w)
Ear shape
Pointy (Y)
Round (y)
Ears
No ears (N)
Two ears (n)
(regulatory)
Claws
Long (L)
Short (l)
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