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:

Linehaul Highway

A major transportation route designed for the efficient movement of goods and passengers over long distances.

Fully-Oscillating

Refers to a component or system, typically in heavy machinery, that has the ability to move or pivot freely in all directions.

Articulate Planes

refers to surfaces or structures that are connected in a way that allows for movement or adjustment, often found in machinery or anatomical structures to enable flexibility and range of motion.

Semi-Oscillating

Refers to a type of movement or mechanism that involves partial oscillation, often used in machinery or vehicle suspension systems.