Compare the Types of Selection Seen in Medium Ground Finch

question 32

Essay

Compare the types of selection seen in medium ground finch beak size in the Galápagos Islands after the drought of 1977, in Australian snake gape width after the introduction of the cane toad, and in gall size produced by gallflies after selection by predatory birds and parasitoid wasps. For each scenario, draw a figure illustrating the type of selection acting on the population (draw the distribution of phenotypes in the population before and after selection). Indicate whether the selection is directional, stabilizing, or disruptive.

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Definitions:

Energized

Refers to a state in which an electrical component, circuit, or system is supplied with power and is operational.

Normally Open

Describes a switch or relay contact that is in a default open state, allowing current to flow only when the contact is actuated to close.

Normally Closed

A term referring to an electrical switch or circuit state where the contacts are closed (allowing current flow) when no actuating force is applied.

Electrical State

An electrical state refers to the condition of an electrical component or system, such as being charged, discharged, on, or off.