Which outcome occurs when migratory salmon consistently fail to locate natal rivers?

💡 Explanation

Repeated homing failures prevent successful reproduction and gene flow, because disruption of olfactory imprinting causes inability to use their 'olfactory maps.'; therefore, populations can exhibit increased genetic drift, rather than retaining stable gene pools.

• Which event occurs if a freshwater fish's gill chloride cells fail during osmoregulation?
• Which developmental problem arises if imaginal discs fail to receive ecdysone signal during metamorphosis?
• Which risk is amplified when some desert plants experience extended drought conditions?
• Which outcome manifests when an echolocating bat encounters significant thermal gradients?
• Which risk increases when high venom resistance evolves in prey?
• Which risk increases when punctured avian air sacs lead to subcutaneous emphysema during sustained flight?