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.

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Definitions:

Absorption Costing

A method of accounting that incorporates all costs associated with manufacturing, including direct materials, direct labor, as well as both variable and fixed overhead expenses, into the product's cost.

Variable Costing

A costing method that includes only variable manufacturing costs—direct labor, direct materials, and variable manufacturing overhead—in unit product cost.

Net Incomes

The total earnings of a company after all expenses, taxes, and costs have been deducted from total revenue.

Absorption Costing

An accounting method that includes all manufacturing costs (direct materials, direct labor, and both fixed and variable manufacturing overhead) in the cost of a product.