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:

Sterile Technique

A collection of detailed methods and steps executed in strictly regulated environments to reduce the risk of contamination by harmful microorganisms.

Sodium Citrate

A chemical compound used as a buffering agent, anticoagulant, or preservative in food and beverages.

EDTA

Ethylenediaminetetraacetic acid, a compound used to bind metal ions in various chemical and medical applications, including as an anticoagulant in blood samples.

Do Not Cleanse

A directive to avoid cleaning or washing an area or item, possibly to preserve evidence or maintain a specific condition.