Aphids
January 1, 1970
of which is much larger than the other. For a large part of the season an aphid population consists of viviparous females. As reproduction is asexual, [...] the progeny of a single female is genetically identical to the mother. In other words, they are clones. Because there is no genetic recombination, different [...] protein. As a consequence, the excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds (such as C