Which of the following occurs when migrating individuals interbreed with a new population? Question 8 options:Founder effectGene flowGenetic driftNatural selectionBottleneck effect
Question
Which of the following occurs when migrating individuals interbreed with a new population? Question 8 options:Founder effectGene flowGenetic driftNatural selectionBottleneck effect
Solution 1
Sure, let's analyze each option step by step to determine which one occurs when migrating individuals interbreed with a new population:
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Founder Effect:
- This occurs when a small group of individuals breaks off from a larger population to establish a new population. The genetic makeup of the new population is determined by the genes of the founding members. This is not directly related to migrating individuals interbreeding with an existing population.
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Gene Flow:
- This is the transfer of genetic material from one population to another. When migrating individuals interbreed with a new population, they introduce new genes into the gene pool of that population, which is the essence of gene flow. This increases genetic diversity within the population.
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Genetic Drift:
- This refers to random changes in the frequency of alleles in a population, which can lead to significant genetic changes over time, especially in small populations. It is not specifically related to the interbreeding of migrating individuals with a new population.
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Natural Selection:
- This is the process by which certain traits become more or less common in a population due to the effects of those traits on the survival and reproduction of individuals. While natural selection can act on the genetic variation introduced by migrating individuals, it is not the process that describes the act of interbreeding itself.
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Bottleneck Effect:
- This occurs when a population's size is significantly reduced for at least one generation, leading to a loss of genetic variation. It is not directly related to the interbreeding of migrating individuals with a new population.
Based on the analysis, the correct answer is:
Gene Flow
When migrating individuals interbreed with a new population, gene flow occurs, introducing new genetic material into the population.
Solution 2
Para responder a esta pregunta, es importante entender los conceptos clave relacionados con la genética de poblaciones. Vamos a analizar cada opción:
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Founder effect (Efecto fundador): Este fenómeno ocurre cuando un pequeño grupo de individuos se separa de una población más grande para establecer una nueva población. La nueva población puede tener una composición genética diferente debido al pequeño tamaño del grupo fundador. No se trata de individuos que migran e interbreed con una nueva población existente.
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Gene flow (Flujo génico): Este término se refiere al movimiento de genes entre poblaciones diferentes a través de la migración de individuos que se reproducen con miembros de la nueva población. Esto aumenta la variabilidad genética dentro de la población receptora y puede reducir las diferencias genéticas entre las poblaciones.
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Genetic drift (Deriva genética): Este es un cambio aleatorio en las frecuencias alélicas de una población, más común en poblaciones pequeñas. No está directamente relacionado con la migración e interbreeding de individuos con una nueva población.
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Natural selection (Selección natural): Este proceso implica la supervivencia y reproducción diferencial de individuos debido a diferencias en sus características heredables. No se refiere específicamente a la migración e interbreeding.
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Bottleneck effect (Efecto cuello de botella): Este fenómeno ocurre cuando una población experimenta una reducción drástica en tamaño, lo que puede llevar a una pérdida significativa de variabilidad genética. No se trata de la migración e interbreeding de individuos con una nueva población.
La opción correcta es Gene flow (Flujo génico), ya que describe el proceso en el cual los individuos migrantes se reproducen con una nueva población, introduciendo nuevos genes y aumentando la variabilidad genética.
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