Biologists Are Not Yet Able to Apply the Phylogenetic Species

question 39

Multiple Choice

Biologists are not yet able to apply the phylogenetic species concept to all forms of life because ____.

• A) individuals within populations exhibit genotypic and phenotypic variation
• B) detailed evolutionary histories have been described for relatively few groups of organisms
• C) many forms of life reproduce asexually
• D) evolutionary history cannot be determined for extinct species
• E) it does not distinguish closely related species that are nearly identical in appearance

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Definitions:

Illusory Consideration

A promise or apparent agreement that lacks the actual commitment or substance to be legally enforceable as consideration in a contract.

Unliquidated Debt

A debt for which the exact amount owed has not been determined.

Career Stress

The stress experienced by individuals in their job roles, often resulting from demands, challenges, or conflicts at work that exceed their coping resources.

Stressful Working Conditions

A work environment characterized by high demands, low levels of control, and potentially harmful physical or psychological effects on employees.