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17 Cards in this Set

  • Front
  • Back
analogous structures
an analogous structure in one species that is similar in function and apperance but not in evoultionary orgin to another anatomical structure in another species
biogeography
the srudy of the geographical distrubution of living orgganisms and fossils on earth
cladogram
a diagram that is based on patterns of shared derived traits and that shows the evolutionary relationships between groups of organisms
common ancestor
any person to whom to or more persons claim decent also the most revent ancestral form or species from which two species evolved
embryology
study of embryos and their development
empirical evidence
based on, concerned with or verafiable by observation or experience rather that theory or pure logic
evolution
a heritable change in the charateristics within a population from one generation to the next the development of new types of organisms from preexisting types of organisms overtime
fossil
the trace or remains of an organism that lived long ago most commonly preserved in sedimentary rock


Hypothesis


In science an idea explanation that is based on observations that can be tested

Fossil record

Total number of fossils that have been discovered as well as to the information derived from them

Homologous structures

Anatomical structures in one species compared to other is anatomical structures and another species originated from a single anatomical structure in a common ancestor of the two species

Index fossil

A fossil is useful for dating and correlating the strata and which it is found

Mitochondrial DNA

An extra nuclear double stranded DNA found exclusively in mitochondria

Phylogenetic tree

A diagram that shows inferred evolutionary relationships among various biological species

Theory

An explanation for some phenomenon that is based on observation experimentation and reasoning that is

Transitional fossils

Any fossilized remains of a life-form that exhibits traits common to both ancestral groups and it's derived ascendant group

Vestigial organ

A vitamin Terry structure and humans corresponding to a functional structure or organ in ancestral animals