Suppose a Particular Amino Acid Variant in a Protein Appeared

question 210

Multiple Choice

Suppose a particular amino acid variant in a protein appeared several times in the phylogeny of a group of yeasts.Species with the variant were often sister to species without the change.The species with the variant generally lived in conditions with higher concentrations of ethanol.What would be the most plausible explanation for this variant?

• A) It involved sensory exploitation.
• B) It arose via convergent evolution.
• C) It was a synapomorphy.
• D) It was evolving in accordance with the molecular clock.
• E) It was evolving in accordance with the parsimony principle.

---

Definitions:

Regression Equation

An algebraic representation of the regression line, describing the relationship between the dependent and independent variables.

Regression Method

A statistical technique used to model and analyze the relationships between variables and how one variable's change affects another.

Industrial Lathe Sales

The commercial activity of buying and selling industrial lathes, which are machines used for shaping metal, wood, or other materials by holding and turning them while applying a cutting tool.

Exponential Smoothing Model

An approach to predict future values in a univariate data set by assigning diminishing exponential weights to older data points.