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ruslelena [56]
3 years ago
5

1. En la tabla a continuación se presentan los datos de un cruce monohíbrido en plantas para el color de

Biology
1 answer:
ELEN [110]3 years ago
7 0

Answer:

Primera ley: todos los individuos serán fenotípicamente iguales en la F1

Segunda ley: la separación de alelos producirá una proporción fenotípica 3:1 en la F2

Explanation:

La primera ley de Mendel indica que el cruzamiento entre dos líneas puras para un rasgo fenotípico particular dará lugar a una F1 homogénea para el fenotipo asociado con el rasgo dominante. Esta ley es aplicable en casos de dominancia completa y herencia monogénica tal y como se describe en el ejemplo citado, donde se realizó el cruzamiento entre líneas puras con flores púrpuras (FF, carácter dominante) y líneas puras con flores blancas (ff, carácter recesivo), dando lugar a una F1 compuesta solamente por plantas con flores púrpuras (Ff), ya que este rasgo es dominante. La segunda Ley de Mendel establece que los alelos se separarán independientemente uno de otro durante la formación de gametos. Por lo tanto, se espera que F2 obtenida a partir del cruzamiento entre plantas heterocigotas para el carácter en cuestión (Ff) tenga una proporción cercana a 3:1 del fenotipo dominante con respecto al recesivo: 3 plantas con flores púrpuras (1 planta con genotipo FF y 2 plantas con genotipo Ff) por cada planta con flores blancas (planta con genotipo ff).

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