Set: Evolution Powerpoint

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All 35 Terms

Term Definition
Evolution descent with modification
Biogenesis the process of living things arising from other living things
Spontaneous Generation belief that living things could come from nonliving things
Radioactive Decay Some isotopes have unstable nuclei, which tend to release particles, energy or both. What is this process called?
Half-life the length of time it takes for ½ of any sample of an isotope to decay
Endosymbiosis the current hypothesis for how the first eukaryotic cells evolved; a theory of the evolution of eukaryotes by the formation of a mutualistic relationship between two prokaryotes
Mitochondria the site aerobic respiration
Chloroplast site of photosynthesis; contains its own DNA, much like that of prokaryotes, & can replicate independently of the nucleus
Mass Number isotopes are designated by their chemical name followed by their
Relative Dating process of discovering how old something is compared to something else
Absolute Dating allows estimate of the how old something is in years
Radioactive Dating a form of absolute dating
Ribozyme a self replicating RNA molecule
Louis Pasteur put to rest the idea that living organisms could be produced by spontaneous generation
Robert Hooke one of the first scientists to study fossils with the aid of a microscope
Fossils the remains or traces of once living organisms
Nicolaus Steno proposed the law of superposition
Charles Lyell proposed the idea of uniformitarianism
Modification By Natural Selection theory created by Darwin; this theory states that the environment may affect individual organisms in a population in different ways because individuals of a species are not identical
Natural Selection different degrees of successful reproduction among organisms in a population
Homologous Structures structures that have a common evolutionary origin
Analogous Structures structures that are similar in function but have different evolutionary origins
Vestigial Structure a structure that probably shares evolutionary origins with a species that has a functional form of the structure
Gene Pool the total genetic information available in a population
Hardy-Weinberg Equilibrium the statement that allele frequencies in the gene pool do not change unless acted upon by outside forces; it is based on a set of assumptions about an ideal hypothetical population that is not evolving
Nonrandom Mating can alter the genotypes of a population, but it does not affect allele frequencies
Genetic Drift operates in small populations; a shift in allele frequencies in a population due to chance
Stabilizing Selection encourages the formation of average traits
Directional Selection encourages the formation of more-extreme traits, such as a very long tongue in anteaters
Disruptive Selection selects for extreme traits rather than average traits
Sexual Selection the development of traits, even those that may seem harmful, can actually enhance reproductive fitness if they encourage mating
Geographic Isolation this results from the division of an original population
Reproductive Isolation results from barriers to successful breeding
Paleoanthropologists they gather data from the fossilized remains of early hominids & their ancestors
Neanderthals early Homo sapiens

Set Information

Terms 35
Creator twilightified
Created May 1, 2008
Groups None
Tag biology
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twilightified : Changed Fossil → the remains or traces of once living organisms to Fossils → the remains or traces of once living organisms
twilightified : Changed Relative Dating → how old something is compared to something else to Relative Dating → process of discovering how old something is compared to something else
twilightified : Changed Genetic Drift → operates in small populations; the contribution or lack of contribution of the genes of one or a few organisms can change the population’s gene pool significantly to Genetic Drift → operates in small populations; a shift in allele frequencies in a population due to chance
twilightified : Changed Endosymbiosis → the current hypothesis for how the first eukaryotic cells evolved is a process;a theory of the evolution of eukaryotes by the formation of a mutualistic relationship between two prokaryotes to Endosymbiosis → the current hypothesis for how the first eukaryotic cells evolved; a theory of the evolution of eukaryotes by the formation of a mutualistic relationship between two prokaryotes
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Most Missed Words

  1. Nonrandom Mating → can alter the genotypes of a population, but it does not affect allele frequencies - 5 misses
  2. Hardy-Weinberg Equilibrium → the statement that allele frequencies in the gene pool do not change unless acted upon by outside forces; it is based on a set of assumptions about an ideal hypothetical population that is not evolving - 4 misses
  3. Genetic Drift → operates in small populations; a shift in allele frequencies in a population due to chance - 2 misses
  4. Directional Selection → encourages the formation of more-extreme traits, such as a very long tongue in anteaters - 2 misses
  5. Radioactive Decay → Some isotopes have unstable nuclei, which tend to release particles, energy or both. What is this process called? - 1 miss
  6. Relative Dating → process of discovering how old something is compared to something else - 1 miss
  7. Nicolaus Steno → proposed the law of superposition - 1 miss