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Life Science A Lesson 10

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theory of evolution
The concept that the physical universe began without God and has changed by random processes, over a period of time, into what we observe today.
biological evolution (organic evolution)
The supposed gradual change of one kind of organism into another kind of organism; orccurs over many generations.
theory of acquired characteristics
The theory that physical changes caused by an organism's environment can be passed on to offspring.
theory of inheritance of acquired characteristics
A method of biological evolution. Acquired characteristics are traits that are caused by an organism's environment.
theory of natural selection
Is much like selective breeding.Choosing certain organisms with desirable traits tobreed in hope that their offfspring also will have the diesired traits.
mutation theory of evolution
The belief that mutations provide the source of change for the evoution of species.
mutation-selection theory (Neo-Darwinism)
An evolutionary theory that states that mutations produce variations and that natural selection determines which variations will survive inorder to produce biological evolution.
evolutionary family tree
A diagram demonstrating the supposed stages of biological evolution.
homologous structure
Similar structures found in different species that are attributed to common ancestry.
common ancestor
An organism from which evolutionists claim differint groups of organisms have evolved or descended.
evolution
A process in which gradual changes cause something to inprove or to become more complex.
fossil record
Historical evidence supplied by fossils.
missing link
An "in-between"organism that must have existed if on type of organism evolved into another; also called a tranitional form.
organic evolution (biological evolution)
The supposed gradual change of one kind of organism into another kind of organism; orccurs over many generations.
Neo-Darwinism (mutation-selection theory)
An evolutionary theory that states that mutations produce variations and that natural selection determines which variations will survive inorder to produce biological evolution.