Genetic Drift: Inroduction, Examples, Types, Causes

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Genetic Code

Introduction

Gene Flow

Examples of Genetic Drift

• Children with brown or blue eyes can come from any parent with both blue and brown eyes. However, if the brown eye colour is the dominant allele, there may be a chance that the offspring will only have brown eyes in the future and that the same eye colour will be passed down through the generations, rendering the genes for blue eyes recessive.
• Now let's use the illustration of the bunnies. The dominant gene in rabbits with brown and white fur is white. However, the dominant allele will be impacted by genetic drift, and only the brown population may survive, wiping out the white-furred rabbits.
• The American bison is yet another illustration. Its population was previously so heavily hunted that it was in peril. Yet according to the experts, the returned population now lacks sufficient genetic diversity.
• A bird with two different beak sizes as an allele. Hence, genetic drift may affect the size of the bird's beak by eradicating a particular beak size from the natural world, thereby lowering the bird's genetic diversity.

Genetic Code Codons Amino Acids

Types of Genetic Drift

Population Bottleneck

Gene Therapy

Founder Affect

Ganongs Potometer

Causes of Genetic Drift

Gastric Symptoms

Consequences of Genetic Drift

Difference Between DNA and RNA

Key Facts About Genetic Drift

• Genetic drift is typically considered an arbitrary alteration in a population's genes with significant future implications for the wider population.
• If genetic drift occurs, it has the potential to have a profound effect on the population. Future generations will be able to see the effects of genetic drift.
• It can damage plants, people, and animals but only has a little effect on the overall population.
• Errors in the DNA or allele selection from the gene pool typically cause genetic drift.
• Although the environment does not play a role in the incidence of genetic drift, it does play a role in the emergence of a new type of dominant species in a habitat that may serve as a habitat for an invading - alien species.
• The entire ecosystem and habitat could be severely hampered by genetic drift and invading alien species.
• The weaker allele is naturally eliminated by the population, a characteristic of the bottleneck effect.
• A new population appears in a new area due to the foundation effect's unique habitat or physical or geographic barriers.