Your Professor Wants You to Construct a Phylogenetic Tree of Orchids

question 24

Multiple Choice

Your professor wants you to construct a phylogenetic tree of orchids. She gives you tissue from seven orchid species and one lily. What is the most likely reason she gave you the lily?

• A) to serve as an outgroup
• B) to see if the lily is a cryptic orchid species
• C) to see if the lily and the orchids show all the same shared derived characters
• D) to demonstrate likely homoplasies

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Definitions:

Products Produced

The goods and services created as a result of the production process by an individual, company, or economy.

Changes

Variations, adjustments, or transformations in conditions, situations, or states over time.

Perfectly Elastic

Describes a situation in economics where the quantity demanded or supplied responds infinitely to changes in price.

Down-sloping

A characteristic of certain economic graphs, like demand curves, which indicates that as the price of an item goes down, demand for it increases.