Question

suppose that individuals in a population of beetles differ in the extent of a dark pigment in their coloration. dark-colored beetles are at a higher risk of predation by birds on light-colored soils. under what circumstance would the coloration of the beetles most likely remain constant, despite the differential predation?

Answer 1

The coloration of the beetles most likely remains constant, despite differential predation, when it is strictly due to ENVIRONMENTAL factors. Phenotypic traits can be influenced by genes or the environment.

The expression of a given characteristic (i.e., a phenotypic trait) in an individual may be associated with genetic and environmental factors, as well as with the interaction between genetic and environmental factors.

Different types of environmental inputs (e.g., diet, temperature range, oxygen, humidity, light, etc) can influence a given phenotype.

A heritability value near zero (0) indicates that almost all of the phenotypic variability for a given trait is caused by environmental factors.

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