INTROGRESSIONS Meaning and
Definition
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Introgressions refer to the transfer of genetic material from one species or population into another through hybridization. It occurs when genetic material from one species migrates into the gene pool of another species, resulting in the introduction of novel genetic variations.
In introgressions, the transfer of genetic material usually occurs from a wild or related species into a domesticated or target species, thereby introducing desired traits into the recipient population. This process is usually facilitated by repeated backcrossing, where the hybrid offspring of the initial cross is subsequently bred back to one of the parental species to increase genetic similarity to the desired recipient population.
Introgression can occur naturally or be induced through controlled breeding techniques. Natural introgressions often play a significant role in evolution, as they can promote genetic diversity and adaptation by introducing advantageous traits from one population to another.
In agriculture, introgressions can be utilized to enhance desired characteristics in crops or livestock. Breeders intentionally introduce genes from wild or wild-relative populations into domesticated species to improve traits such as disease resistance, yield, or stress tolerance. This technique allows for the targeted transfer of specific genes or gene combinations, creating more resilient and productive crops or livestock.
Introgressions can also occur in natural populations without human intervention. In these cases, introgressive hybridization can lead to increased biodiversity and might also have implications for conservation efforts, as genetic diversity is crucial for species survival and adaptation to changing environments.
Common Misspellings for INTROGRESSIONS
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Etymology of INTROGRESSIONS
The term "introgression" comes from the combination of two Latin words: "intro", meaning "within", and "gressus", meaning "a step or going". It was first used in the field of genetics to describe the movement of genes from one species or population into another.
