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When levels of the air pollutant ozone exceed a certain level - such as in cities with a lot of automobile traffic on hot days - people with asthma are more sensitive to the environmental agents that trigger asthma than on other days. Devise an experiment to determine whether experiencing breathing difficulties in response to high atmospheric ozone levels is inherited.
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Study MZ twins with asthma who live in areas that differ in degree of air pollution.
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If you were to clone a human being, would the clone and the original have identical fingerprints? Explain your rationale.
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Not likely. Nature has already conducted this experiment with identical twins, which are a type of clone. The fingerprint patterns are a multifactorial trait and even subtle environmental conditions resulting from the position of a fetus in the womb cause differences in the fingerprint patterns of identical twins.
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Fraternal twins are no more closely related, in a genetic sense, than are any two siblings. Why might they be more alike in other ways?
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Fraternal twins share the same fetal environment. They are also the same age and therefore may share more experiences.
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When leptin was first discovered, headlines proclaimed that the finding would lead to effective anti-obesity pills. Why is this an oversimplification?
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