### action | selection:

Disruptive selection
* can also operate within a species to produce distinctive morphotypes.
* can be a precursor to speciation
  - important in the early stages of speciation
  - increase bio-diversity
  - lead to two new species
* does cause an increase in variation.
* favors extreme phenotypes and selects against the average.
* favours extreme phenotypes and eliminates intermediate ones.
* is an example of speciation
  - the process that leads to speciation
  - when the environment supports both extremes
* leads the means of the population graph to be on both ends of the graph.
* type of the directional one, which acts in several directions.

Divergent selection
* drives the adaptive radiation of crossbills.
* play roles.

Embryo selection
* case where the current law is also right.
* very selective process.

Habitat selection
* depends on abundance of available prey.
* predicts genetic relatedness in an alpine ungulate.
* varies with season, time of day, and the sex and age to the animal.

Hybrid selection
* critical factor in determining the optimum plant population.
* is one of the most important management decisions in corn silage production.

Mate selection
* begins in late winter with several males vying for the favour of a single female.
* is up to the female, and it is the females that compete for the males.
* works statistically and on an evolutionary time-scale.

Positive selection
* occur in evolution.
* occurs at multiple stages and is essential for B cell differentiation.

Random selection
* is applied by region in proportion to population weights
  - intended to ensure equal representation amongst populations
  - related to sampling
* technique to help reduce bias.

### action | selection:

Step
* Most steps occur in humoral immune responses
* are blocks
  - located in front doors
  - part of stairways
  - paths
  - taken by individuals
* cause variation.
* could have impact
  - major impact
* fast paced rhythmic dance done in the absence of music.
* fast-paced, rhythmic dance done in the absence of music using the body for sound.
* include examinations.
* increase strength.
* involve actions
  - arrangements
  - choices
  - development
  - follow steps
  - identification
  - reaction
  - selections
  - tests
* lead to contraction
  - muscle contraction
* process exploration of harmonic and rhythmic patterns.
* provide descriptions.
* require careful consideration
  - cooperation

### action | selection | step:

Poison pill
* are also popular because they are flexible.
* protect publicly traded companies from hostile takeovers.

Precaution
* Avoid outdoor activities from dusk until dawn, when many mosquitoes are biting.
* is caution
  - measures
  - the only chance for all countries and populations to prevent harm

Preventive step
* are important because once diseases are present they are very difficult to control.
* taken in childhood can promote healthy eyes throughout life.

Safeguard
* Evaluate whether steps have been taken to adequately safeguard property subject to theft.
* are a form of institutionalized nuclear transparency
  - essential for protecting workers from needless and preventable injuries