A Scientist Is Studying the Population Genetics of a Butterfly

question 16

Multiple Choice

A scientist is studying the population genetics of a butterfly population inhabiting a group of islands off the coast of California.The mainland population has the greatest allelic diversity.Island A has lower allelic diversity than the mainland,and island B has lower diversity than island A.All the alleles found on island B are also found on island A.The allelic diversity of island C is the same as the allelic diversity of island B,but half of the alleles on island C are not found on islands A and B.Which of the following scenarios best explains this pattern?

• A) All three islands were colonized from the mainland: A was colonized first,and B and C were colonized at the same time.
• B) Island A was colonized from the mainland first,then butterflies from A colonized B at the same time that C was colonized from the mainland.
• C) Islands A and C were colonized from the mainland at the same time,then butterflies from C colonized B.
• D) Island A was colonized from the mainland first,then C was colonized from the mainland,then butterflies from C colonized B.
• E) Islands B and C were colonized from the mainland at the same time,then butterflies from B colonized A.

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Definitions:

Factory Overhead Volume Variance

The difference between the budgeted and actual volume of production, affecting the allocation of fixed manufacturing overhead costs to products.

Direct Materials Price Variance

A measure used in cost accounting that calculates the difference between the actual cost of direct materials and the standard cost expected to be incurred.

Direct Materials Quantity Variance

A measure used in cost accounting to indicate the variance between the actual quantity of materials used and the standard quantity expected to be used in production.

Standard Material Requirement

The predetermined amount of materials specified for the production of a single unit of product, often used in budgeting and controlling costs.