The Most Recent Identified Ancestor of Eukaryotes Is a Group

question 75

Multiple Choice

The most recent identified ancestor of eukaryotes is a group of Archaea called the lokiarchaeotes.The evidence of this phylogenetic relationship is based on the presence of certain genes in the lokiarchaeote genome.These genes

• A) confer a fitness advantage to archaea and are likely a result of horizontal gene transfer.
• B) are unique to prokaryotic archaea.
• C) are conserved in the two major divisions of life.
• D) are involved in fundamental biological processes that take place in eukaryotes.
• E) are more closely related to genes found in bacteria than to those found in eukaryotes.

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Definitions:

Short-run Supply Curve

A graphical representation of the quantity of goods a firm is willing and able to supply to the market at different prices, over a short period where at least one input is fixed.

Marginal Cost

The financial commitment needed for the creation of an additional unit of a product or service.

Fixed Cost

Expenses that do not vary with the level of production or sales, such as rent, salaries, or insurance costs.

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