Northern Fence Lizard Classification:
Genus: Sceloporus Species: S. undulatus
Kingdom: Animalia Pylum : Chordata Class: Reptilia Order: Squamata Family: Phrynosomatidae
Natural Selection / Evolution:
Evolution describes how a specific species allele frequency changes over a period of time to adapt to an environment. Furthermore, a change in a species alleles occurs through the process of either: natural selection, mutation, genetic drift, or migration.
In Natural Selection: the frequency of an allele changes due to a change in an environment. As a result, the species with a trait "best fitted" for the environment survives.
Mutation: produce a new allele which is created by a random change in DNA sequence or a mutagen. Mutations are either beneficial or harmful to an organisms survival.
Migration: when an species allele frequency change because they moved to a difference environment/location
Genetic Drift: two different ways specifies evolve in a genetic drift: through either the founder or population bottle neck effect
Population Bottle Neck: a random environmental factor kills a certain species, leaving only a few survivors. The survivors keep reproducing and overtime
Founder Effect:
In Natural Selection: the frequency of an allele changes due to a change in an environment. As a result, the species with a trait "best fitted" for the environment survives.
Mutation: produce a new allele which is created by a random change in DNA sequence or a mutagen. Mutations are either beneficial or harmful to an organisms survival.
Migration: when an species allele frequency change because they moved to a difference environment/location
Genetic Drift: two different ways specifies evolve in a genetic drift: through either the founder or population bottle neck effect
Population Bottle Neck: a random environmental factor kills a certain species, leaving only a few survivors. The survivors keep reproducing and overtime
Founder Effect:
Northern Fence Evolution
CLICK ON THE IMAGE TO ENLARGE VIEW:
The picture on the left represents a Lizards evolutionary diagram. Moreover, evolutionary trees are used to express the similarity between organisms who share a common ancestor. The common ancestor is usually found on the bottom of the entire diagram, and the animals branching out from the ancestor show other organisms that are related to it. As the diagram keeps going up, it shows the evolution of the related animals. The animals located towards the bottom of the tree usually dead species, and the ones towards the top are the species alive today that have evolved from a common ancestor.
Speciation: occur either sympatrically or allopatrically and result in the formation of a new fertile species.
Northern Fence Lizard Taxonomy:
NORTHERN FENCE TAXONOMY PREZI