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61 Cards in this Set
- Front
- Back
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Fossil |
reserved remains or traces of an organism that lived in the past |
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mold |
A type of fossil that is a hollow area in sediment in the shape of an organism or part of an organism |
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Cast |
A fossil that is a solid copy of an organism's shape, formed when minerals seep into a mold |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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Evolution |
change over time the process by which modern organisms have descendent from ancient organisms |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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Evolution |
change over time the process by which modern organisms have descendent from ancient organisms |
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extinct |
to referred to a group of related organisms that has died out and has no living members |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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Evolution |
change over time the process by which modern organisms have descendent from ancient organisms |
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extinct |
to referred to a group of related organisms that has died out and has no living members |
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radioactive decay |
The process in which the nuclei of radioactive elements breakdown releasing fast-moving particles and energy |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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Evolution |
change over time the process by which modern organisms have descendent from ancient organisms |
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extinct |
to referred to a group of related organisms that has died out and has no living members |
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radioactive decay |
The process in which the nuclei of radioactive elements breakdown releasing fast-moving particles and energy |
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intrusion |
an igneous rock layer formed when magma hardens beneath earths surface |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived a long ago |
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|
Evolution |
change over time the process by which modern organisms have descendent from ancient organisms |
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extinct |
to referred to a group of related organisms that has died out and has no living members |
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radioactive decay |
The process in which the nuclei of radioactive elements breakdown releasing fast-moving particles and energy |
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intrusion |
an igneous rock layer formed when magma hardens beneath earths surface |
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era |
One of the three long units of geologic time between the pre-Cambrian & the present |
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petrified fossil |
a fossil in which minerals replace all or part of an organism |
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paleontologist |
A scientist who studies fossils to learn about organisms that lived long ago |
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Evolution |
change over time; the process by which modern organisms have descended from ancient organisms |
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extinct |
to refer to a group of related organisms that has died out and has no living members |
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radioactive decay |
The process in which the nuclei of radioactive elements breakdown releasing fast-moving particles and energy |
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intrusion |
an igneous rock layer formed when magma hardens beneath earths surface |
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era |
One of the three long units of geologic time between the pre-Cambrian & the present |
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half-life |
The time it takes for half of the atoms of a radioactive element to decay |
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law of super position |
The geologic principle that states that the horizontal layers of sedimentary rock each layer is older than the layer above it and younger than the layer below it |
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relative age |
The age of a rock compared to the ages of other rocks |
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hybrid |
and offspring of crosses that has two different alleles for a trait |
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hybrid |
and offspring of crosses that has two different alleles for a trait |
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alleles |
The different forms of a gene |
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hybrid |
and offspring of crosses that has two different alleles for a trait |
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alleles |
The different forms of a gene |
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chromosome |
if threadlike structure within the cells nucleus that contains DNA that is passed from one generation to the next |
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hybrid |
and offspring of crosses that has two different alleles for a trait |
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alleles |
The different forms of a gene |
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chromosome |
a threadlike structure within the cells nucleus that contains DNA that is passed from one generation to the next |
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heredity |
The passing of traits from parents to offspring |
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Gene |
A sequence of DNA that determines a trait and is passed from parent to offspring |
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phenotype |
an organisms physical appearance or visible traits |
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phenotype |
an organisms physical appearance or visible traits |
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genotype |
an organisms genetic makeup or allele combinations |
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homozygous |
having two identical alleles for a particular gene |
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homozygous |
having two identical alleles for a particular gene |
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Heterozygous |
having two different alleles for a particular gene |
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codominance |
A situation in which both alleles for a gene are expressed equally |
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incomplete dominance |
A situation in which one allele is not completely dominant over another allele |
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meiosis |
process that occurs in the formation of sex cells (sperm & egg) by which the number of chromosomes is reduced by half |
