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A Horns Activity: Writing Rules:  Generalizing from data

Dragons have two different ways to express the horn genes. They can have horns or be "hornless."   The rule for horns is:

HH, Hh, and hH gives horns, hh gives no horns.

1.      Try to answer the following questions without looking at the computer.  You may use the horns rule (above) as an example:

Not all dragons have the same number of legs. How many ways can the legs genes be expressed? ________

What is the rule for legs?

2.       How many ways can the wings genes be expressed? ________
What is the rule for wings?


3.      Now that you have written rules for these other dragon traits, use GenScope to check your work. If you want to add or change anything that you wrote above now that you've looked at GenScope, do not change the answers above - just rewrite the information below.

New information about legs:  

New information about wings:

4.       Do you notice anything special about these traits and their rules? That is, are they similar or different from the rule for horns? Explain below.

5.       Why is it important to look at the similarities and differences? What does it mean to have different patterns of inheritance? Explain below.

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