It Is Problematic for Researchers to Identify the Deepest Node

question 55

Multiple Choice

It is problematic for researchers to identify the deepest node in a phylogenetic tree because __________.

• A) it is possible to construct a number of different possible phylogenetic trees from one dataset
• B) putting a date to the node involves setting the molecular clock
• C) genetic data provides no insights into what the bodies carrying the genes looked like
• D) all of the above

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Definitions:

R&D Expenditures

Financial investments made towards research and development activities aimed at creating new products, processes, or technologies.

Expected-Rate-Of-Return

An alternative phrasing for the anticipated gain or potential loss from an investment over a specified period, accounting for risk.

R&D Activities

Research and Development activities involve investigative efforts companies undertake to innovate and introduce new products or services.

R&D Spending

Expenditures devoted to research and development in order to innovate, improve products, or discover new processes and technologies.