In a Hypothetical Environment, Fishes Called Pike-Cichlids Are Visual Predators

question 26

Multiple Choice

In a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish (in other words, they locate their prey by sight) . If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following is least likely to be observed in the algae-eater population over the course of many generations?

• A) selection for drab coloration of the algae-eaters
• B) selection for nocturnal algae-eaters (active only at night)
• C) selection for larger female algae-eaters, bearing broods composed of more, and larger, young
• D) selection for algae-eaters that become sexually mature at smaller overall body sizes
• E) selection for algae-eaters that are faster swimmers

Recognize the phases of the helping relationship in nursing.

Employ strategies to overcome language barriers in patient care.

Interpret non-verbal cues and contradictions in patient communication.

Understand the role of empathy in nursing and demonstrate empathetic communication.

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Definitions:

Selection Differential

Selection differential is a measure of the strength of phenotypic selection. The selection differential describes the difference between the mean of the reproducing members of the population that contribute offspring to the next generation and the mean of all members of a population.

Quantitative Trait

A measurable phenotype that varies among individuals over a given range to produce a continuous distribution of a phenotype. Quantitative traits are sometimes called complex traits; they’re also sometimes called polygenic traits because their variation can be attributed to polygenic effects (that is, the cumulative action of many genes).

Heritability

The proportion of variation in a trait among individuals that can be attributed to genetic differences.

Heritability

The proportion of observed variation in a particular trait that can be attributed to inherited genetic factors in a population.