The offspring of the virgin females are in most of these instances females; but among the bees and wasps parthenogenesis occurs normally and always results in the development of males, the " queen " insect laying either a fertilized or unfertilized egg at will. [Please select]
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What is the difference between the appearance of the nucleus of the fertilized and the unfertilized egg. [Please select]
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If the unfertilized eggs perish without hatching, those which hatch and produce males are therefore fertilized; and the German theory falls to the ground. [Please select]
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Those that remain yellow are the unfertilized ones and will be of no use to us; we must discard them. [Please select]
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