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A farmer measured the weight (in grams) of apples picked from the same tree. The weights ranged from 150 g to 200 g.
Which of the following are the most likely sources of natural variability observed in the apple weight data? Select the two correct answers.
(1 point)
Responses
the amount of sunlight received by different branches of the tree
the amount of sunlight received by different branches of the tree
variations in the amount of fertilizer applied to the tree
variations in the amount of fertilizer applied to the tree
genetic differences within the apples on the tree
genetic differences within the apples on the tree
the presence of pests or diseases affecting some of the apples
All Answers 1
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Answers:
- the amount of sunlight received by different branches of the tree
- the presence of pests or diseases affecting some of the apples
Reason: Light exposure varies by branch and affects fruit size, and pests/disease can reduce growth of some fruits. Fertilizer is applied to the whole tree (so not a within‑tree source of variability), and apples on the same tree are generally genetically the same (especially on grafted trees), so genetics is unlikely to explain within‑tree weight differences.
- the amount of sunlight received by different branches of the tree
- the presence of pests or diseases affecting some of the apples
Reason: Light exposure varies by branch and affects fruit size, and pests/disease can reduce growth of some fruits. Fertilizer is applied to the whole tree (so not a within‑tree source of variability), and apples on the same tree are generally genetically the same (especially on grafted trees), so genetics is unlikely to explain within‑tree weight differences.
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