Heredity Simulation                                   

1.     The image shows a male and female hornimonster, each with different genetic traits.  The allele for one horns is dominant over the allele for two horns. 

               MALE                                                                                  FEMALE

                       

Which hornimonster has the dominant allele? _______________

2.     Obtain four red wooden sticks that will represent the chromosomes of your parents.  Arrange them so that the male’s set (Hh) is on one side and the female’s set (hh) is on the other side.  The M1,M2, F1, F2 labels will help you if you get them confused.

3.     Flip the sticks over so that you can’t see their labels.  Choose one chromosome from the mother pile and another from the father pile. This represents the chromosomes each parent is “donating” to the next generation.

 

 

 

 

 

 

4.     Data  (Repeat the exchange 12 times to produce 12 offspring)

 

Genotype (letters)

Phenotype

Offspring 1

 

 

Offspring 2

 

 

Offspring 3

 

 

Offspring 4

 

 

Offspring 5

 

 

Offspring 6

 

 

Offspring 7

 

 

Offspring 8

 

 

Offspring 9

 

 

Offspring 10

 

 

Offspring 11

 

 

Offspring 12

 

 

 

5.     Math:   Determine the PERCENTAGE of each phenotype of offspring from your data table.  Percentage is determined by taking a part and dividing by the whole and multiplying by 100.  Show your work.

% that have two horns  ____________________             # of offspring with 2 horns  =

                                                                                                Total number of offspring

 

      % that have one horn    ____________________            # of offspring with 1 horn   =

                                                                                                Total number of offspring

 

6.     Show the cross using a Punnett square.  Hh x hh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.     From the cross above, what is the phenotypic ratio of the offspring?

 

 

 

8.     Convert the phenotypic ratio into PERCENTAGES of each phenotype of the offspring.

 

 

 

9.     Compare this percentage to your simulation (where you flipped the sticks).   Does the Punnett square predictions match the results of your crosses?

A.  They are exactly the same

B. They are close to the same

C.  They are very different

D.  I have no idea

 

 

10. What if the female had the genotype Hh.   Show the cross between the new parents Hh x Hh

 

 

 

 

 

 

 

 

 

 

 

11. From the cross above, what is the phenotypic ratio of the offspring?

 

 

 

 

12. From the cross above, what is the genotypic ratio of the offspring?

 

 

 

13. The allele for curly is dominant over the allele for straight tail. Which hornimonster(s) has/have the dominant allele? _______________

 

14.  Obtain four yellow wooden sticks that will represent the chromosomes of your parents.  Arrange them so that the male’s set (Tt) is on one side and the female’s set (Tt) is on the other side.  The M1,M2, F1, F2 labels will help you if you get them confused.

15. Flip both the red sticks and the yellow sticks over so that you can’t see their labels.  Choose one red and one yellow chromosome from the mother pile and one red and one yellow chromosome from the father pile. This represents the chromosomes each parent are “donating” to the next generation.

16.    Data  (Repeat the exchange 12 times to produce 12 offspring)

 

Genotype (letters)

Phenotype

Offspring 1

 

 

Offspring 2

 

 

Offspring 3

 

 

Offspring 4

 

 

Offspring 5

 

 

Offspring 6

 

 

Offspring 7

 

 

Offspring 8

 

 

Offspring 9

 

 

Offspring 10

 

 

Offspring 11

 

 

Offspring 12

 

 

 

17. Math:   Determine the PERCENTAGE of each phenotype of offspring from your data table.  Percentage is determined by taking a part and dividing by the whole and multiplying by 100.  Show your work.

% that have two horns, curly tail     ____________________

 

% that have two horns, straight tail  ____________________    

                                                                       

      % that have one horn, curly tail   ______________________

 

      % that have one horn, curly tail    ______________________   

 

                                                                                   

18.  Using the FOIL method, what are the four possible gametes formed by the male hornimonster?

 

 

 

 

 

 

19. Using the FOIL method, what are the four possible gametes formed by the female hornimonster?

 

 

 

 

20. Show the cross using a Punnett square.  HhTt x hhTt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21. From the above cross, list the genotypes, frequencies and phenotypes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22. From the cross above, what is the phenotypic ratio of the offspring?

 

 

 

23. Convert the phenotypic ratio into PERCENTAGES of each phenotype of the offspring.

 

 

 

24. Compare this percentage to your simulation (where you flipped the sticks).   Does the Punnett square predictions match the results of your crosses?

A.  They are exactly the same

B. They are close to the same

C.  They are very different

D.  I have no idea