Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

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#Question id: 3899

#Unit 3. Fundamental Processes

Which one of the following classes of genes is involved in specifying the localization of organs in the Drosophila embryo?

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#Question id: 9261

#Unit 9. Diversity of Life Forms

Which of the following statements about horizontal gene transfer is accurate?

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#Question id: 16098

#Unit 7. System Physiology – Animal

Which one of the following is produced by sebaceous glands?

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#Question id: 15543

#Unit 8. Inheritance Biology

In Benzer's intragenic mapping experiments, what event was required to allow production of infectious phage from rII mutants?

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#Question id: 10246

#Unit 10. Ecological Principles

Under an ideal free distribution: