structural, behavioral, and physiological traits that make an organism fit for its environment
the organic molecules that serve as the units from which proteins are made
reaction that does not need oxygen
the study of similarities and differences in the embryos of different organisms
type of prokaryote, blue-green, mostly photosynthetic
having 2 parts
selection that tends to favor one extreme form of a trait over another
a type of natural selection in which individuals with both extreme traits are favored and individuals with the average trait are not favored
groups of organisms made of one or more cells that have a membrane-bounded nucleus and membrane-bounded organelles
the change in allele frequencies in a population over time
the remains of ancient living things
all the genes in all the members of a population
a change in the gene frequency of a population due to random events
the movement of genes from one homologous chromosome to another via crossing-over during meiosis
genetic diversity in a population
structures that occur in different species but are similar enough to suggest that the species had a common ancestor
a regular movement of animals to a different location because of weather conditions, or of food, water, or shelter requirements
a change in a DNA molecule or in the structure of a chromosome
the process in which the natural environment acts on individuals so that those with favorable traits survive and reproduce and those that do not have those traits are eliminated
Relating to or based on evolutionary development or history
a diagram displaying the evolutionary relationships of types of organisms
the evolutionary history of organisms
all of the members of one species that live in a common area and whose population dynamics are different from those of other populations
organisms that usually are made of a single cell and do not have a membrane-bound nucleus or membrane-bound organelles
a way of determining the absolute age in years of geologic samples using radioactive isotopes
selection that favors the average form of a trait over extreme forms
some of the oldest fossils, dome structures built by cyanobacteria
the science of naming and classifying organisms based on their natural relationships
structures that appear to have no function for the organism but probably had a function in an ancestral organism
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