The Investigation
Germinating the P1 and F1 Seeds
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circle of filter paper, dividing
Use a srraightedge and pencil ro draw a line through the center of a
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th"e filter in the t$ry1
filter in l,"tr. uu"t or," iIlF, and the other F1. Add your name or group number- Place
Poul off any excess
of a petri dish and flood th" paper with water until it is completely soaked.
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F1 seeds on the
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orher side. place rhe lid on the dish and leave ir under the light
will examine the dish in 3 days, after the seeds have germinated. )t T*g"e +\^a .d"f".
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observing the p1 and F1 seedlings
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difference or differences
Observe rhe p1 and F1 seedlings in your petri dish. Record any consistent
groups to be certain that
other
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those
between these two ,"i, of ,."dlings. Compare your seedlings
all groups are seeing the same differences'
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What phenoWnic dipreneeldo you notice between the
P1 and F1
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Based on your observarions and general knowledge of genetics, state a hypothesis
give a reason
think these phenotypes are inherited. Be as complete as possible and cite evidencp for or
for each part of your hypothesis'
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Include a one- or rwo.word
sy*bol for the allele that gives rise to each phenotype. Indicate
designation for each phenorype
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which allele of each pair is dominant
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studying. Given this information, use your hypothesis to predicr the following (give your reasoning
for each prediction):
1. the phenotype ofthe Pr:
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f"rtirrg hypothesis and Predictions
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materials are availa$e to you. OutLinegfocedure whereby you can
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use these materials to tesi your hypothesis. Include ry#hods and expected Sutcomes. List at leasr rwo
possibleoutcomes that could cause you to reject your hypothesis or modifi it.
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Observing F2 Seedlings
Three days after setting up your test, retrieve your petri dish and inspect the F, seedlings.
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hypothesis.
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3. modifi'your
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new detailed hypothesis to replace your old one.
hypothesis? If so, expiain in detail your modification.
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