If We Know That Two Lineages Split 20 Million Years

question 18

Multiple Choice

If we know that two lineages split 20 million years ago, and we know the degree of molecular difference between contemporary representatives of each, we can estimate

• A) their phylogenetic relationship.
• B) the amount of time that has elapsed since other pairs of related species converged.
• C) how far back in the past the two lineages shared a common ancestor.
• D) the rate of change that produced that degree of difference.
• E) how long it will take for the groups to completely speciate.

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Definitions:

Hicks Version

Refers to John Hicks' adaptation of consumer demand theory, particularly in relation to indifference curves and utility maximization.

Substitution Effect

A modification in buying behavior triggered by a change in goods' comparative prices, prompting people to switch from one product to another.

Indifference Curve

A graph representing combinations of goods that provide the same level of satisfaction to a consumer.

Rational Consumer

An economic concept describing an individual who makes choices that maximize their utility or benefit, based on their preferences and constraints.