Microevolution

In Glogpedia

by jakemalek419
Last updated 4 years ago

Discipline:
Science
Subject:
Genetics
Grade:
10

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Microevolution

MICROEVOLUTION

Gene Pool

Genetic Drift

Bottleneck Effect

Genetic drift is a mechanism ofevolution in which the frequencyof an allele is changed due to random sampling

The Bottleneck effect is an occurance when the population fallsto a very small number, causing a possible extinction or the removal of genetic variation

A metaphorical ¨pool¨ of allelesin a similar group of species

Non-Random Mating

Non-Random mating is the mating betweenorganisms that are the same species and will have the best chances of creating offspring best suited to their environment.

Mating

Mating is the breeding between two orgainismsto create offspring. It can change the frequency of an allele by having their alleles be passed down to their offspring, increasing the frequencyof an allele.

Natural Selection

Natural selection is best described as, ¨survival of the fittest¨, as it describes the events where an organism's ability to survive in their environment is tested. This helps to weed out the weaker alleles in a population.

TYPES OF ISOLATION:

Temporal

Allopatric Speciation

Geographic

Behavioral

Species that can breed together have two differentmating rituals, causing the species to not be attractedto one another.

Geographic Isolation is isolation through geographicalchanges occuring in an environment separating them and creating a new species of the organism.

Species that can breed togehter are separated bythe temperature or seasons, causing them to not breed together.

Sympatric speciation

Allopatric speciation occurs whenone species ends up separating and creating two species

Two Species are created from oneancestor in the same geographical location

Hybridization

The combination of two organisms to create a new hybrid species.


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