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Ecology - Theory of Evolution

NAME __________________________________

HOUR _____________
Across
All of the alleles of the population's genes
Nearly all organisms share ____ indicating that biochemistry might support evolution.
The fossil record is ____ and is an indirect evidence of evolution.
Any variation that aids an organism's chances of survival in its environment is ____.
The percentage of any specific allele in the gene pool
Physiological adaptations can occur over ____ periods of time.
Any individual or species with a multiple of the normal set of chromosomes
One mechanism for genetic change is environmental, such as radiation.
Alternative forms of a gene for a particular trait
Darwin practiced this type of breeding with his pigeons.
____ selection occurs when natural selection favors one of the extreme variations of a trait.
"A change in the gene pool of a population over time" is a definition for ____.
Occurs when members of similar populations no longer interbreed
Down
A population in which the frequency of alleles remains the same over generations
A mechanism for change in populations
Structural features with a common evolutionary origin are ____.
All the members of a species that live in an area
Polyploid speciation takes ____ generation(s).
The outward expression of genetic make-up.
____ isolation occurs when formerly interbreeding organisms can no longer mate and produce fertile offspring.
____ selection favors average individuals in a population.
____ evolution is when species that once were similar diverge, becoming increasingly distinct.
____ isolation occurs when a physical barrier divides a population.
Structural features that do not have a common evolutionary origin but are similar in function are ____.
Structural adaptations arise over ____ periods of time.
A kind of structural adaptation that enables one species to resemble another species.
Developed Theory of Evolution by Natural Selection