The Phylogeny Below Was Generated Using Molecular Data

question 89

Essay

The phylogeny below was generated using molecular data. C is the node representing the common ancestor of humans and chimpanzees; B is the node representing the common ancestor of the cow and human/chimpanzee lineages; A is the node representing the common ancestor of the salmon and cow/human/chimpanzee lineages. Imagine that a researcher is interested in finding the approximate dates of A, B, and C. Give two approaches that would help resolve the timing of the nodes in the phylogeny.

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Definitions:

Marginal Revenue

The additional income received from selling one more unit of a good or service.

Bulk Sale

The sale of large quantities of goods to a buyer, typically at a reduced price, often used in wholesale transactions or when selling commodities.

Reserved Quantity

The amount of inventory set aside or reserved for a specific purpose or customer, not available for general sale or use.

Spot Market

A public financial market in which commodities, securities, or currencies are traded for immediate delivery and payment, contrasting with futures or options markets.