Vocab 1
The cumulative genetic change in a population of organisms from generation to generation
What is evolution
The physical evidence of an organism that lived in the ancient past
What is a fossil
Neptunea tabulata, ammonites, trilobites, and brachiopods are examples of what type of fossils
What are index fossils
Information that is gathered by observation or experimentation
The molecule that carries genetic information in all living organisms
What is DNA
Evolutionary patterns and trends on a larger scale than microevolution
What is macroevolution
Changes in allele frequencies that occur within a population over successive generations
What is microevolution
First set of organisms that lived on Earth
What is bacteria
Evidence for evolution that involves observing the formation and growth of an embryo
What are genetics
A body structure similar to another in a different lineage because the structure evolved in a common ancestor
Homologus structures
A body structure that is similar in function or appearance to another in a different lineage but not similar in origin or development
What is analogous structure
The characteristic time it takes for half of a quantity of a radioisotope to decay
What is half-life
A fossil that dates the layers where it is found because it came from an organism that is abundantly preserved in rocks
What is index fossils
The functions of insect wings and bird wings are the same, their underlying structures are very different is an example of
What is convergent evolution
DNA that is passed from one generation to the next only through the maternal line
What is mitochondrial DNA
a method of estimating the age of a rock or fossil
What is radiometric dating
An evolutionary remnant of a formerly functional structure
What is vestigial structures
The longest interval of geologic time
What are eons
This process must occur rapidly to preserve an organism before decay
What is rapid burial
A fossil showing traits of both reptiles and birds is an example of this type of species
What is a transitional species
A geologic principle that states geologic processes operate consistently throughout time
What is uniformitarianism
The idea that evolutionary change of a species is because of a slow, steady accumulation of changes over time
What is gradualism
The Badlands of South Dakota is one of her favorite places to photograph
Who is Annie Griffiths
An element rare on Earth's surface but common in meteorites
What is iridium
This term refers to a species from which multiple different species have evolved
What is a common ancestor