Name _________________________ Date ______________ Period _____________
Monster Genetics
Part A: Is it a boy or girl?
To determine the sex of your monster, flip the coin for the male parent. Heads would
represent X, while tails would be Y.
Sex
Mother
Father
XX
XY
Genotype
Phenotype
Part B: Elf Traits
 Obtain two coins from your teacher. One will represent the mother and one will
represent the father. The parents are heterozygous for all the monster traits.
 Flip the coins for parent for each trait. If the coin lands with heads up, it
represents a dominant allele. A coin that lands tails up indicates a recessive
allele. Record the result for each allele. Use the results and the Monster Traits
page to determine the genotype and phenotype for each trait.
Trait Dom/Rec
Face Shape
Eye Number
Hair Style
Smile
Ear Style
Nose Style
Mother
Cc
Ee
Ss
Tt
Vv
Nn
Father
Cc
Ee
Ss
Tt
Vv
Nn
Eye Color
Gg
Gg
Skin Style
Horns
Incomplete Dominance
Skin Color
Body Style
Claw Style
Ll
Ff
Ll
Ff
BW
IQ
OZ
BW
IQ
OZ
Genotype
Phenotype
Name ____________________________Date _____________Period ___________
Monster Genetics
Now you must draw your monster as his/her genetics describe him/her. You
may design his/her attire and background (school appropriate). The drawing must be
colored.
Monster’s Name _____________________________________
Gender _________________
Haunts/Feeds on _______________________________________
______________________________________________________
______________________________________________________
______________________________________________________
Monster Traits
(Phenotypes)
Dominant/Recessive
Face Shape
Circle (C), Oval (c)
Eye Number
One (E), Three (e)
Hair Style
Sprigs all over the body (S), No hair (s)
Smile
Fanged teeth (T), Square teeth (t)
Ear Style
Pointed (V), Fin-like (v)
Nose Style
Huge (N), Nostrils Only (n)
Eye Color
Green (G), Yellow (g)
Skin Style
Scales (L), Smooth (l)
Horns
Present (F), Absent (f)
Incomplete Dominance
Skin Color
Brown (BB), Gray with Brown and Green Spots (BW), Light Green (WW)
Body Style
Tall/Thin (II), Medium Build (IQ), Short/Plump (QQ)
Claw Style
Five Fingered (OO), Three Fingered (OZ), Lobster Pincers (ZZ)