Micro & Macro Evolution
Number of blue snakes increases within a species.
What is Micro Evolution?
Defines a species by its ecological niche.
What is the ecological species concept?
Barriers that prevent hybrid zygotes from developing into a viable and fertile adult
What are Postzygotic Barriers?
Fill in the blank:
____ _____ documents the rise and fall of different
groups of organisms over time.
What is Fossil record?
Gene flow interrupted or reduced when a population is divided into isolated subpopulations.
What is Allopatric speciation?
Free points
Hurray!
To worms are placed in the same species due to similar structural features.
What is the morphological species concept?
Mules being sterile is an example of...
What is reduced hybrid fertility?
Something that helps reveal the relative age of fossils
What is strata?
Region in which members of different species mate and produce hybrids.
Hybrid Zones
What is Macroevolution?
The most widely accepted species concept.
What is the biological species concept?
Mechanical isolation is:
What is morphological differences can prevent successful completion of mating
The decay of radioactive isotopes
What is Radiometric dating?
Polyploidy is an example of...
Sympatric speciation
_____ forms a conceptual bridge between microevolution & macroevolution.
What is Speciation?
Give an example of a limitation of the biological species concept.
Fossils
Asexual Organisms
Grolar bears +
A specific example of Hybrid Breakdown
The rate of decay of radioactive isotopes is expressed by:
What is a half-life?
A half life is the time required for 50% of the parent isotope to decay.
Species change a lot at the branching of species, then little for the rest of their existence.
Punctuated Model