El sistema endocrino usualmente actúa mediante regulaciones por retroalimentación negativa, ésto quiere decir que si pase por una situación de estrés mi cuerpo va a: *

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25% or 1/4 of the offspring would have red flowers, 50% or 1/2 of the offspring would have pink flowers, and 25% or 1/4 of the offspring would have white flowers. i crossed rr and rr which are the pink-flowered genotypes to find these ratios.