Evolution Chapters 14.1/15

Front 1

Evolution

Back 1

change over time

Front 2

Natural selection

Back 2

mechanism that drives evolution;guided by four principles

Front 3

Descent with modification

Back 3

issimply passing traits from parent to offspring, and this concept is one of thefundamental ideas behind Charles Darwin's theory of evolution.

Front 4

Superposition

Back 4

a principal that states that younger rocks lie above older rocks if the layers have not been disturbed

Front 5

Science

Back 5

the intellectual andpractical activity encompassing the systematic study of the structure andbehavior of the physical and natural world through observation and experiment.

Front 6

Absolute Age

Back 6

the numeric age of an object of event, often stated in years before the present

Front 7

Homologous Structures

Back 7

anatomical structures in one species that, compared to other anatomical structures in another species, originated from a single anatomical structure in a common ancestor of the two species

Front 8

Analogous Structures

Back 8

an anatomical structure in one species that is similar in function and appearance, but not in evolutionary origin, to another anatomical structure in another species

Front 9

Transitional Species

Back 9

Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants

Front 10

Biogeography

Back 10

the study of the geographical distribution of living organisms and fossils on Earth

Front 11

Theory

Back 11

an explanation for some phenomenon that is based on observation , experimentation, and reasoning; that is supported by large quantity of evidence

Front 12

Biogensis

Back 12

the scientific principal that living organisms come only from other living organisms

Front 13

Catastrophism

Back 13

the theory that changes in the earth's crust during geological history have resulted chiefly from sudden violent and unusual events.

Front 14

Uniformitarianism

Back 14

the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.

Front 15

Spontaneous Generation

Back 15

an early and now disproved theory that living organisms come to life spontaneously from nonliving material

Front 16

Relative Age

Back 16

The geologic age of a fossil organism, rock, or geologic feature or event defined relative to other organisms, rocks, or features or events rather than in terms of years.

Front 17

Strata

Back 17

Layers of rock

Front 18

Extinct

Back 18

Species had ceased living after a point in time

Front 19

Anatomy

Back 19

the branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.

Front 20

Embryology

Back 20

the branch of biology and medicine concerned with the study of embryos and their development.

Front 21

Vestigial Structures

Back 21

a structure in an organism that is reduced in size and function and they may have been complete and functional in the organisms ancestors

Front 22

Phylogeny

Back 22

the evolutionary history of a species or taxonomic group; the relationships by ancestry among species or taxonomic groups

Front 23

Artificial Selection

Back 23

the selective breeding of organisms for specific desirable characteristics

Front 24

Fossils

Back 24

the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock

Front 25

What are four premises of evolution by natural selection

Back 25

Variation

Over-Production

Struggle for Exsistence

Survival

Gradual Change

Front 26

Charles Darwin

Back 26

Developed the theory of evolution by natural selection