How Many Phenotypic Classes May Be Generated from a Three-Point

question 6

Multiple Choice

How many phenotypic classes may be generated from a three-point testcross?

• A)(3)² = 9
• B)(2)³ = 8
• C)(3)³ = 27
• D)(2)² = 4
• E)It cannot be predicted.

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Definitions:

Frequency-Dependent Selection

A type of natural selection in which the suitability of a phenotype is determined by its relative frequency compared to other phenotypes within the population.

Mutualistic

Describes a symbiotic relationship in which both organisms involved derive a benefit.

Coevolutionary Alteration

A change that occurs in the genetic composition of one species (or multiple species) in response to a genetic change in another, reflecting a coevolutionary relationship.

Speciation

Speciation is the evolutionary process by which new species arise. Speciation causes one evolutionary lineage to split into two or more lineages (cladogenesis).