Which mechanism causes the distinct caste system stages in social insect colonies?

💡 Explanation

When pheromones are released by queen insects, they trigger differential gene expression in developing larvae determining caste specialization because these chemicals bind to receptors, initiating specific developmental pathways. Therefore pheromone regulation establishes different castes rather than nutrient limitation, temperature, or microbes which have different control mechanisms.

• Which outcome occurs when CAM pathway plants experience prolonged waterlogged soil conditions?
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• Which consequence results when hive temperature decreases during honeybee waggle?
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