In Some Plants, a Purple Pigment Is Synthesized from a Colorless

question 14

Multiple Choice

In some plants, a purple pigment is synthesized from a colorless precursor.In a cross between two parental plants, one purple and the other colorless, an F₁ generation was produced that was all purple.The F₂ produced from the F₁ had 775 purple, 200 red and 65 colorless plants.What mode of inheritance and phenotypic ratio do these results suggest?

• A)Incomplete dominance, 1:2:1 phenotype ratio
• B)Dominant epistasis, 12:3:1 phenotype ratio
• C)Codominance, 1:2:1 phenotype ratio
• D)Recessive epistasis, 9:3:4 phenotype ratio

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Definitions:

Monopoly

A market structure characterized by a single seller or producer dominating the entire market, facing no competition.

Linear Demand Curve

A graphical representation that shows a straight-line relationship between the price of a good and the quantity demanded.

Profit-Maximizing

The strategy employed by a business to identify the optimum price and quantity of production for maximizing earnings.

Price-Elastic

A term that describes how sensitive the demand for a good or service is to changes in its price; high elasticity means demand changes significantly with price changes.