Which process causes different bristle patterns during late-stage insect metamorphosis?

💡 Explanation

During metamorphosis, precisely regulated selective cell apoptosis, mediated by hormone cascades, occurs because programmed cell death eliminates larval structures and allows imaginal discs to form adult bristles in different patterns. Therefore cell apoptosis regulation yields varied bristle arrangement, rather than germ cell changes, chitin activation or melanization which affect cellular composition or color/hardness.

• Which physiological effect in honeybees increases colony temperature during cold stress triggering a shivering response?
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• Which outcome occurs when certain species shift osmotic strategy under stress?