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explain the occurrence of birth defects?

A.
How can you explain the occurrence of birth defects (caused by altered genes) in children and
grandchildren of WWII atomic bomb victims, when the victims themselves were only mildly
affected?
B.
During the past 50 years, more than 200 species of insects that attack crop plants have become
highly resistant to DDT and other pesticides. Based on what you have learned in this class
regarding evolution, explain the rapid and widespread evolution of resistance. Now that DDT has
been banned in the US, what do you expect to happen to levels of resistance to DDT among
insect populations?

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