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Which initial outcome occurred when Zea mays introduced to 17th-century Europe faced new disease pressures?

A)Rapid genetic bottlenecking ensued
B)Hyper-diversification was immediately favoured
C)Disease resistance promptly increased
D)Outbreeding depression was unavoidable

💡 Explanation

Rapid genetic bottlenecking ensued because founder effect limited initial European varieties; lacking genetic diversity, the genetic drift mechanism allowed certain diseases decimated populations, therefore vulnerability increased rather than diversity because selection operated on an already limited diversity.

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