Genetic Monster

Purpose: To practice Punnett squares in a fun and creative way! J

Procedure:

1. Determine your traits as the parents of your baby monster. Flip the coin two times (once for each allele) to determine your genotype for each trait listed on the worksheet.

·  Heads = Dominant Allele

·  Tails = Recessive Allele

3. Construct Punnett squares to determine the possible genotypes for each trait in your baby monster.

·  If the Punnett square shows a greater than 50% probability for a phenotype, that trait will be present in the baby monster.

·  If the Punnett square shows a 50% probability for each of the two possible phenotypes, flip a coin. If the coin shows heads, your baby will show the dominant phenotype. If the coin shows tails, your baby will show the recessive phenotype.

4. You will be determining your genotype and the genotype of your baby for the following traits:

Horns on head- Yes H ______

No h

Head Shape- Triangle T ______

Oval t

Neck Length- Long L ______Short l

# of Arms Four A ______

Two a

Spots- Yes S ______

No s

# of Eyes- One E ______

Two e

Ear Shape- Pointed P ______

Flat p

Claws Sharp C ______

Flat c

Wings- Yes W ______

No w

# of Legs- Four F ______

Two f

Is it . . . “A One-Horned, One-Eyed Flying Purple People Eater”? WS

Trait / Parent 1 Genotype / Parent 2 Genotype / Baby’s Phenotype
Horns on head
Head Shape
Neck Length
# of Arms
Spots
# of Eyes
Ear Shape
Claws
Wings
# of Legs

Name: ______

Using the phenotypes you have determined, draw a picture of your monster baby. Use the questions on the worksheet to write a description of your monster. Be accurate and creative!

Is Baby a Boy or Girl? ______(flip a coin: Head= Boy, Tails=Girl)

Monster Punnett Squares:

You and your partner determine what your baby will look like.

Horns on Head

Dominant = Yes Genotype: ______

Recessive = no Phenotype: ______

If it is 75% Dominant, than choose the dominant trait.

If it is 50% Dominant & 50% recessive, than flip a coin to decide what trait the baby has.

Head Shape

Dominant = Triangle Genotype: ______

Recessive = Oval Phenotype: ______

Neck Length

Dominant = Fat Genotype: ______

Recessive = Thin Phenotype: ______

# of Arms

Dominant = 4 Genotype: ______

Recessive = 2 Phenotype: ______

Spots

Dominant = Yes Genotype: ______

Recessive = no Phenotype: ______

# of Eyes

Dominant = 1 Genotype: ______

Recessive = 2 Phenotype: ______

Ear Shape

Dominant = Pointed Genotype: ______

Recessive = Flat Phenotype: ______

Claws

Dominant = sharp Genotype: ______

Recessive = Dull Phenotype: ______

Wings

Dominant = Yes Genotype: ______

Recessive = no Phenotype: ______

# of Legs

Dominant = 4 Genotype: ______

Recessive = 2 Phenotype: ______

If it is 75% Dominant, than choose the dominant trait.

If it is 50% Dominant & 50% recessive, than flip a coin to decide what trait the baby has.

Questions:

  1. What is the name of your Monster? ______
  2. What does it eat? ______
  3. What planet does it live on? ______
  4. What type of animal eats them (predator)? ______
  5. How many earth years does it live? ______
  6. How much do they weigh? ______
  7. How do the multiply? ______
  1. (Draw a dihybrid Punnett square) If you crossed a monster that was Heterozygous for # eyes & Homozygous for dull claws with a monster that was Homozygous one eyed monster who is Heterozygous for their claws

a.  Key: ______

b.  Cross: ______

c.  How many will be: 2 eyed & sharp claws ______

d.  2 eyed & dull claws_____

e.  1 eye & sharp claws _____

f.  1 eye & dull claws _____