By Mapping a Given Trait on a Phylogenetic Tree That

question 42

Multiple Choice

By mapping a given trait on a phylogenetic tree that we have already constructed using other data, we can

• A) generate hypotheses about when and how this trait evolved.
• B) create a pedigree for the trait.
• C) test for polytomies in this trait.
• D) confirm the presence or absence of this trait in species for which we are lacking observational data.

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Definitions:

Descriptive Research

A method of research that aims to observe and describe characteristics of a subject without influencing it.

Placebo

A substance or treatment with no therapeutic effect, used as a control in testing the efficacy of another substance or treatment.

Clinical Researcher

A professional involved in conducting scientific studies to evaluate and improve healthcare interventions, diagnostics, and treatments.

Efficacy

The ability to produce a desired or intended result, often used in the context of medicine to describe the effectiveness of a treatment.