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Biology Vocab Test

TermDefinition
Evolution Change over time; the process by which modern organisms have descended from ancient organisms
Adaptation Heritable characteristics that increase an organism’s ability to survive and reproduce in an environment
Descent with Modification Passing traits from the parent to the offspring
Natural Selection Process by which organisms that are most suited to their environment survive and reproduce most successfully; survival of the fittest
Fossil Preserved remains of, or traces of, ancient organisms.
Fossil Record A chronological collection of life’s remains in the rock layers recorded during the passage of time. The youngest organisms are on top and the oldest are found deeper in the earth.
Extinct Term used to refer to a species that has died out and has not living members.
Homologous Structure Structures that are similar in different species of common ancestors.
Vestigial Structure Structure that is inherited from ancestors which has lost much or all of its original function.
Population Groups of individuals of the same species that live in the same area.
Variation Divergence in the structural or functional characteristics of an organism from the species or population norm or average
Artificial selection Selective breeding of plants and animals to promote the occurrence of desirable traits in offspring
Gene Pool All the genes, including all of the different alleles for each gene, that are present in a population at any one time.
Antibiotics Group of drugs used to block the growth and reproduction of bacterial pathogens.
Micro-Evolution Evolution on the smallest scale. These changes happen in alleles of a population.
Genetic Drift Sum total of all the different form of genetic information carried by a particular species, or by all organisms on Earth.
Gene Flow The movement of genes into or out of a population.
Fitness How well an organism can survive and reproduce in its environment.
Heritable Capable of being inherited or of passing along inheritance.
Proliferation To grow by rapid production.
Created by: user-1582248
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