In Fruit Flies,the Recessive Pr and Cn Mutations Cause Brown

question 12

Multiple Choice

In fruit flies,the recessive pr and cn mutations cause brown and bright-red eyes,respectively (wild-type flies have brick-red eyes) .The double mutant pr cn combination has orange eyes.A female who has wild-type eyes is crossed to an orange-eyed male.Their progeny have the following distribution of eye colours: $$\begin{array} { | l | r | } \hline \text { wild-type } & 8 \\\hline \text { brown } & 241 \\\hline \text { bright-red } & 239 \\\hline \text { orange } & 12 \\\hline & 500 \\\hline\end{array}$$
What is the genotype of the mother of these progeny?

• A) pr cn/pr⁺ cn⁺
• B) pr⁺ cn/pr⁺ cn
• C) pr⁺ cn/pr cn⁺
• D) pr cn⁺/pr cn⁺
• E) pr cn/pr cn

Examine the elasticity of demand in relation to market structure.

Differentiate between the types of competition based on the number of firms and product differentiation.

Comprehend the significance of market power in pricing and output decisions.

Understand the concept of marginal revenue and how it is calculated.

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Definitions:

Labor Productivity

A measure of economic performance that compares the amount of goods and services produced (output) with the number of labor hours used to produce those goods and services.

Supply of Labor

Refers to the total hours that workers wish to work at a given wage rate, influenced by demographics, wages, and working conditions.

Aggregate Demand

The sum of all demand for products and services in an economy, indicating the total spending on goods and services at each price level.

Equilibrium Output

The level of output at which the quantity of goods produced equals the quantity of goods consumed in an economy, with no external pressures to change.