Evolutionary Agents
Does mutation increase or decrease the variety of alleles in a population?
It.. Increases!!
What is continental drift responsible for?
What are the four main principles associated with evolution?
Variation
Competition
Adaptation
Selection
Phylogeny is?
Phylogeny is the study of evolutionary relationships among species or a group of organisms.
When a clines forms a circular shape they are called a?
a ring species
Does non-random mating or sexual selection increase or decrease the frequency of certain alleles in a population?
It.. Increases!!!
What is ecological biology?
The study of the present interactions of species with their environments and each other
What are environmental (abiotic and biotic) factors that influence which individuals survive and which do not?
Selection pressure
What are the two types of nodes?
Terminal nodes and Internal nodes
True or false Clines are demes which can interbreed at their boundaries.
True
What are the 2 main causes of genetic drift?
The founder effect and the bottleneck effect
What does paleontology refer to?
Paleontology refers to the study of fossils such as bones, teeth, shells, or remains of organisms
What is the biological phenomenon where an edible organism has a similar appearance to an inedible one called?
Mimicry
What are the four main types of trees
Cladograms
Phenogram
Additive Trees
Ultrametric Trees
True of False It is also possible for a new species to arise without geographical isolation?
True
True or false the founder effect is when there is a sudden and sharp decline in a population due to an environmental factor.
False!
This method of dating doesn't give an exact age in years but, actually it determines if one fossil is older or younger than another based on its position in the rock layers
What is relative dating?
Is a favorable allele always dominant, or can it be recessive?
No, A favorable allele does not have to be dominant it can be recessive.
What are additive trees
These are cladograms with varying branch lengths.
When does Allopatric speciation occur?
Allopatric speciation occurs after a population becomes geographically isolated
Also known as migration, this process involves the movement of alleles into or out of a population as individuals move between groups.
Gene flow!!
Organs that aren't used or are useless are referred to as..?
vestigial organs
When does directional Selection occur?
This occurs when environmental changes favor individuals at one extreme of a trait's range. Over time, the average phenotype of the population shifts in that specific direction.
What is the Acronym for LUCA
Last universal common ancestor
What are the three types of speciation
Allopatric Speciation
Sympatric Speciation
Instantaneous Speciation