9th Grade - Biology - Evolution

What was the name of the ship Darwin sailed?

Why was Darwin's work so important?

Darwin focused on what 3 patterns of diversity?

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History of life as documented in fossils

What was Darwin's observation about "species vary globally?"

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Fossils that exist for a short period of time

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All life on earth shares a single, common ancestor.

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Study of embryo development

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Structure that have no function but still exist.

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Similar structure used for different functions

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Features of different species that are similar in function

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The study of where different species live.

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The flow of alleles due to migration

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The change in genetic material of a cell

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When gametes from 2 parents join therefore increasing genetic variation

What are the 4 parts of Natural Selection

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A mechanism that prevents different populations from interbreeding

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Barriers that prevent members of the population from mating with each other.

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When a population has a specific way to find mates

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When an organism is active at different times of the day or have different seasons for breeding

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Seasonal behavior resulting in movement from one environment to another

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A random change in allele frequency (it decreases variation)

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A form of natural selection in which individuals at one end of the curve have a higher fitness then at the other end.

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A form of selection in which individuals near the center of the curve have a higher fitness then at the ends

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Natural Selection in which individuals at both ends of the curve have a higher fitness then the ones in the middle.

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Related species become less alike

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Process by which unrelated organisms independently evolve similarities when adapting to similar environments

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The evolution of 2 species based on their interaction with one another.

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A single ancestral population gives rise to a large number of new species

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The pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change.

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The complete die out of an entire species

What are the 5 conditions to Hardy-Weinberg Equilibrium

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When the diversity in a species decreases

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How well an organism can survive and reproduce in an environment

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Can by physical, behavioral, and physiological changes that help animals survive.

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Full range of physical and biological conditions in which an organism lives and uses their conditions.

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A diagram depicting patterns of shared characteristics among species

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A population not evolving and allele frequencies in gene pool do not change.

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Consists of all genes present in a population.

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A trait controlled by 2 or more genes

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A population or group whose members interbreed and produce offspring

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A situation in which allele frequencies change as a result of migration of a small subgroup of a population.

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Process by which new species are formed.

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A period of time in which a species exhibits limited morphological change

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Developed the 2 word naming system called binomial nomenclature and developed the branching classification system

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Concluded that the earth was much older than a few thousand years.

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Reasoned that if human population grew unchecked there would not be enough food and living space for everyone

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Suggested that individual organisms could change during their lifetime by not using various parts of their body.  Developed radioactive carbon dating

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Argued that laws of nature are consistent over time.

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Developed the theory of evolution

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Writer of an essay Darwin read that agreed with his thoughts

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Suggested that organic compounds necessary for life could have arisen from simpler compounds on a primitive earth

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Changes occur gradually over time

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Many species vanish at one time