3.2 Daily Summary: Genetic Variation
Growers of fruit trees have always had problems
with insects. Insects can cause visible damage to
fruits, making them less appealing to consumers.
As a result of this damage, much of the fruit
cannot be sold. Insecticides have been useful
for controlling these insects, but, in recent years,
some insecticides have been much less effective.
In some cases, insecticides do nothing to stop the
insect attacks.
HINT: insecticide = poison that kills insects
tion
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Directions: You will determine whether a scientific claim is true or false and you will
support your evaluation using evidence
fic Claim: "If the env
Step 1: Read the scientific claim below and determine whether it's true or false
Scientific Claim: “ The insecticides are no longer effective because the insects have
evolved a resistance to the poison. "
Is the scientific claim above true or false?
Step 2: Support your evaluation with evidence. Answer the following bullet points
●
What did growers of fruit trees do that caused to help combat insects
• Why is it that some bugs did not die from the pesticide? What changed about their
genes?
If those bugs continue to survive and have kids, what trait will their children have?
• Why are more bugs in the population showing resistance? Why is this trait
becoming more dominant?