Exam Speed Round

Four mechanisms of heat exchange

Radiation, conduction, convection, evaporation

Freshwater fish are _____ to their environment

Hyperosmotic

Saltwater fish are _____ to their environment

Hypoosmotic

Countercurrent exchange increases what?

Oxygen diffusion

Stabilizing selection favors what?

Intermediate phenotypes

Directional selection favors what?

One extreme phenotype

Disruptive selection favors what?

Both extreme phenotypes

Natural selection is _____

Nonrandom

Genetic drift is _____

Random

Mutation creates what?

New genetic variation

Bottleneck effect results from what?

Population crash

Founder effect results from what?

Small group starting a new population

Principle of allocation means what?

Resources are limited

Fast life history occurs in what environments?

High mortality

Slow life history occurs in what environments?

Stable, low-mortality environments