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Custer State Park

Custer State Park

Sunday, October 7, 2012

Potato Head Genetics


When using this activity, please give credit to my site.

This activity is to help introduce genetics and punnett squares using the toys Mr. and Mrs. Potato Head.



Name:                                                                          Period:

Potato Genetics

Background:

In the species Potato headius, gender, eye color, eyesight, and mouth type are genetic, meaning they inherit those qualities from their parents.

Materials per group:


  • Potato head body
  • Pair of ears
  • Pair of arms
  • Pair of shoes/feet
  • Penny
  • Nose




As a group, flip the coin to see the traits of your potato head. Tails= the dominant trait and heads= the recessive trait.   In the case of gender, tails=X and heads=Y.

Parent Potato
Trait
Genotype
Phenotype
Gender
XX= female        XY= male (moustache)


Eyes
B=blue    b=black


Eyesight
E=normal   e=glasses


Mouth
M=lips/mouth  m=teeth only









Find another group with a potato of the opposite gender and write their potato’s genotypes by copying their table.


Gender:                       Eyes:                           Eyesight:                     Mouth:                                   




Fill in the table on the following page.
Be sure to write only one allele per box!
Trait
Female gametes
Male gametes
Gender





Eyes





Eyesight





Mouth







What could the new spud look like? Fill in the Punnett squares below and write the phenotypic ratios next the Punnett Square.











Phenotypic Ratios:








Phenotypic Ratios:








Phenotypic Ratios:









Phenotypic Ratios:








Dropping Your Genes


This is an activity that I learned of when I student taught.  I took the worksheet and revamped it to make it less confusing for students.  The only bummer is I cannot figure out how to post it all so it looks like it would in Word or a PDF.  The only part that is is missing is the page with the chromosomes on it.

This is a nice introduction activity for middle school or high school when you begin the discussion of heredity.  

Name: _____________________________                      

Genes Activity
Procedure:
  1. Determine your phenotype (outward trait) and then the genotype (alleles present for trait) for each trait and record in the given column.  If you are unsure if you are homozygous (AA) or heterozygous (Aa) for a trait, consider yourself heterozygous.
  2. Transfer your genotypes to the chromosomes by writing one allele in each box on the corresponding chromosome.
  3. Initial your chromosomes.
  4. Cut out the chromosomes and fold them on the dotted lines.
  5. Pair up with another student of the opposite sex.
  6. Partners hold their chromosomes in the air and drop them on the table.
  7. Record the alleles for each trait that appear face up on the chromosomes between both partners.
  8. Repeat the steps 6 & 7 for additional children.

Traits
                                                                                   

Chromosome #1
            Skin pigment: Normal= N                                                      Albino= n

            Tongue curler: Curler= C                                                        Noncurler= c

Chromosome #2
            Ears lobed:      Lobed= L
                                    Attached= l

Chromosome #3
            Polydactyly:    6 fingers/toes= P
                                    5 fingers/toes= pp

            Freckles:          freckles= F
No freckles= f

Chromosome #4
            Hairline:          widow’s peak= W
                                    Straight across= ww

            Dwarfism:       short stature= D
                                    Normal height= dd

Chromosome #5
            Mid digital hair: hair= H
                        No hair= hh

Chromosome #6
Height:                        6’+= TT
                                    5’-6’= Tt
                                    Under 5’= tt

My Traits
Phenotype                       Genotype
Skin

Tongue



Ears



Polydactyly


Freckles



Hairline


Dwarfism


Mid digit

           


Height

Chromosome #7
            Nose size:        normal=P
                                    Big= pp

Chromosome #8
            PKU disease:  healthy= K
                                    PKU= kk

Chromosome #9
            Tay Sachs disease: healthy= T
                                    Tay Sachs= tt

            Huntington’s Disease: Disease= H
                                    Healthy= hh

            Eye color:        brown (or green)= B
                                    Blue= bb

Chromosome #10
            Sex:                 female= XX
                                    male= XY


Phenotype                       Genotype

Nose



PKU



Tay Sachs


Huntington’s


Eye


sex



Child #1         
            Genotype   Phenotype                                    Genotype   Phenotype                                      Genotype   Phenotype
1)                                     1)                                     2)
3)                                     3)                                     4)                                    
4)                                     5)                                     6)
7)                                     8)                                     9)
9)                                     9)                                     10)
Child #2         
            Genotype   Phenotype                                    Genotype   Phenotype                                      Genotype   Phenotype
1)                                     1)                                     2)
3)                                     3)                                     4)                                    
4)                                     5)                                     6)
7)                                     8)                                     9)
9)                                     9)                                     10)
Child #3         
            Genotype   Phenotype                                    Genotype   Phenotype                                      Genotype   Phenotype
1)                                     1)                                     2)
3)                                     3)                                     4)                                    
4)                                     5)                                     6)
7)                                     8)                                     9)
9)                                     9)                                     10)

Saturday, August 18, 2012

American Chemical Society

I just discovered this fantastic resource for middle school physical science:

middleschoolchemistry.com


Tuesday, July 3, 2012

Teacher Appreciation Week!

I am doing some research on when sales are and here is what I found in order of date:

Staples- Depends on location; Free gift bag with coupon
Office Depot- Depends on location; 20% off, breakfast and give aways
Office Max: August 9th- Receive a free reusable tote and 15% off everything inside the tote


Worksheet and Lesson Plan Resources

There are many free websites that I have stumbled upon that share free ideas.  Here is a couple valuable ones, no matter your subject.