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17 May, 22:39

how do environmental factors affect the variation and distribution of expressed traits in a population?

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  1. 17 May, 22:53
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    Environmental factors can also cause mutations in genes, and viable mutations are inherited. Environmental factors also affect expression of traits, and hence affect the probability of occurrences of traits in a population.
  2. 18 May, 01:22
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    Los rasgos hereditarios están determinados por factores hereditarios, ahora llamados genes. Los genes vienen en pares (es decir, están presentes en dos copias en un organismo).

    Los genes vienen en diferentes versiones, ahora llamados alelos. Cuando un organismo tiene dos diferentes alelos de un gen, uno (el alelo dominante) esconderá la presencia del otro (alelo recesivo) y determinará la apariencia.

    Durante la producción de gametos, cada óvulo y espermatozoide recibe solo una de las dos copias del gen presente en el organismo y la copia asignada a cada gameto es aleatoria (ley de la segregación).

    Los genes de diferentes rasgos se heredan de manera independiente uno del otro (ley de la distribución independiente).
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