In a Plant, a Single Locus Affects Both Berry Color

question 29

Multiple Choice

In a plant, a single locus affects both berry color and berry size.There are two mutant alleles (R₁ and R₂) in addition to the wild-type allele (R₀) .Individuals that are R₀R₀ have large, white berries.Individuals that are R₁R₁ or R₀R₁ have red berries, individuals that are R₂R₂ or R₀R₂ have small berries, and R₁R₂ individuals have berries that are both red and small.What are the expected phenotypic ratios if you crossed R₁R₂ individuals to homozygous wild type?

• A) All would have small white berries.
• B) All would have large red berries.
• C) Half would have small white berries, and half would have large red berries.
• D) One-third would have wild-type berries, one-third would have small white berries, and one-third would have large red berries.
• E) One-quarter would have wild-type berries, one-half would have small white berries, and one-quarter would have large red berries.

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Definitions:

Financial Break-even

The point at which total revenues equal total costs and expenses, leaving no net profit or loss from a financial perspective.

IRR

Internal Rate of Return; a financial metric used in capital budgeting to estimate the profitability of potential investments.

Competitive Market

A market structure characterized by many buyers and sellers, where no single participant has enough power to influence the price of goods and services.

Positive NPV

An indication that an investment is expected to generate earnings greater than the costs, with a Net Present Value above zero, suggesting it's a profitable venture.