Evolutionary Agents
Species which have a similar way of life often have similar body features, organs and adaptations.
What is Homozygous dominant, Heterozygous, and Homozygous recessive
The study of looking at the structural similarities in a variety of organisms
What is Comparative Anatomy?
Alleles that provide an individual with a selective advantage
Alleles that provide a disadvantage
What are Favorable and unfavorable alleles?
Complete and permanent removal of species from the Earth
What is Extinction?
A group of similar organisms that normally interbreed in nature to produce fertile offspring
Defining a species
Differences within individuals within a population
What is genetic variation
Structures which are similar due to their origin
What are homologous features?
Humans select traisr which are Favorable rather than the environment
What is Artificial Selection ?
The continuous Extinction of a species
What is Background Extinction
The three different types of speciation
Allopatric Speciation, Sympatric Speciation, and Instantaneous Speciation
Meiosis and sexual reproduction, mutation
What are ways variation arises in a gene pool
Physical features that evolved independently due to a similar environmental pressure
What are analogous structures
Biological phenomenon where an edible organism has a similar appearance to an inedible one
What is Mimicry?
When a species diverges into a large number of species
What is Adaptive Radiation?
Species are usually found as distinct, geographically separate populations
what are demes
Large and irreversible changes in the gene pool
What is macroevolution?
Evolution where species have a similar habitat
What is Convergent Evolution?
Random process in which an organism containing desirable traits are more likely to survive and reproduce in its environment
What is Natural selection?
Species which have a similar way of life often have similar body features, organs and adaptations.
What is Convergent evolution?
A group of demes that have characteristics that change progressively across a range
What is a cline
Random changes in smaller populations that causes a change in the allele frequencies
What is genetic drift?
organs not used often by the organisms become useless and begin to degenerate
Vestigal organs
The three main ways natural selection operates
Stabilizing Selection, Directional Selection, and Disruptive Selection
Change occurs slowly and continuously without pauses
What is Gradualism by Charles Darwin ?
Process by which one or more new species forms from an existing species
What is Speciation