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(also known as gene migration) is the transfer of alleles or genes from one population to another.
The acquisition of the same biological trait in unrelated lineages
- An untested model is called a Hypothesis.
- Proposed explanation for a phenomenon.
- Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories.
Because ecology is so vast, it becomes necessary to organize it so that there is value and connectiveness to its study. Early ecological studies attempted organization with respect to habitat. Ecologists still do this, and indeed, there are separate paradigms for stream ecology and forest ecology.
Specialists working with interacting populations, communities, and ecosystems are called synecologists.
a branch of ecology that deals with the structure, development, and distribution of ecological communities
discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology,including anthropogeny, ecology, phylum, phylogeny, stem cell, and the kingdom Protista.
Levels of Organization Concept. This concept simply organizes the objects of study into "systems." A system is defined as a group of objects possessing some form of regular interaction or interdependence.
Organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) from simple substances present in its surroundings, generally using energy from light (photosynthesis) or inorganic chemical reactions (chemosynthesis).
Model of scientific inquiry that emphasizes the need for alternative hypotheses, rather than a single hypothesis in order to avoid confirmation bias.
Theory is a contemplative and rational type of abstract or generalizing thinking, or the results of such thinking.
Inductive reasoning (as opposed to deductive reasoning) is reasoning in which the premises seek to supply strong evidence for (not absolute proof of) the truth of the conclusion. While the conclusion of a deductive argument is supposed to be certain, the truth of an inductive argument is supposed to be probable, based upon the evidence given.
Julian Huxley labeled contemporary evolutionary thought the Modern Synthesis or Synthetic Theory because it became an amalgamation of data and concepts of genetics, taxonomy, embryology, morphology, biogeography, and other disciplines.
an experiment designed to control for variables affecting the results of another experiment
study of interactions among organisms and their environment, such as the interactions organisms have with each other and with their abioticenvironment.
Charles Darwin's Grandfather
- 1. Organisms have a built-in drive toward perfection.
- 2. Organisms can become "adapted" to their environments.
- 3. Frequent spontaneous generation occurs.
- 4. Change occurs through inheritance of acquired characters