If Some of the Vapor Is Allowed to Escape from a Sample

question 27

Multiple Choice

If some of the vapor is allowed to escape from a sample where liquid and vapor are in equilibrium, the immediate result is

• A) an increase in intermolecular force strength
• B) a decrease in condensation rate
• C) a decrease in evaporation rate
• D) more than one correct response
• E) no correct response

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Definitions:

Directional Selection

Directional selection favors individuals on one end of the distribution of phenotypes present in a population.

Paralogs

Genes within the same organism that have evolved by duplication and may have different functions.

Gene Family

A group of genes sharing a common origin that typically encode proteins with similar functions.

Molecular Clock

A method used to determine time based on base pair substitutions. Molecular clocks use the rates of molecular change to deduce the divergence time between lineages in a phylogeny, for example. They work best when they can be “calibrated” with other markers of time, such as fossils with known ages and placements.