________: uses the decay of radioactive isotopes to measure the age of a rock.
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Cystic fibrosis
________: is a genetic disorder that affects mucus and sweat secretions.
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Paleontologist
________: is a scientist who studies fossils.
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Cambrian explosion
________: rapid diversification of most major animal groups marking the start the paleozoic era.
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Pedigrees
________: are used to study human inheritance patterns.
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Achondroplasia
________: sometimes is called dwarfism.
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K T
________ boundary: layer of iridium rich material between the rocks of the cretaceous period and rocks of the paleogene period that provides evidence of a meteorite impact.
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Huntingtons disease
________: affect the nervous system.
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Relative dating
________: is a method used to determine the age of rocks by comparing them with those in other layers.
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Genetic disorders
________: can be caused by dominant or recessive alleles.
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Plate tectonics
________: describes the movement of several large plates that make up the surface on Earth.
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Half life
________: is the amount of time it takes for half of the original isotope to decay.
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origin of life
The ________ is hypothesized to be a series of chemical events.
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geologic time scale
The ________ is divided into eras, periods and epochs.
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Organic molecules
________, such as amino acids, might have been formed from simpler molecules on early Earth.
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Epochs
________: which las several million years, re the smallest units of geologic time.
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Relative dating
________ and radiometric fating are two methods used to determine the age of fossils.
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Endosymbiont theory
________: explains that eukaryotic cells may have evolved from prokaryotic cells.
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Geologic time scale
________: is a record of earths history.
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carrier
describes a person who is heterozygous for a recessive disorder
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law of superposition
states that younger layers of rocks are deposited on top of older layers
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epochs
which las several million years, re the smallest units of geologic time
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periods
last ten millions of years, are division of geologic time consisting of two or more epochs
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era
lasts hundreds of millions of years, is a unit of geologic time consisting of 2 or more periods
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eon
is the longest unit of time in the geologic time scale and can include billions of years
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plate tectonics
describes the movement of several large plates that make up the surface on Earth
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spontaneous generation
is the idea that life arises from nonlife
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theory of biogenesis
states that only living organisms can produce other living organisms
Studied by 5 people
