Aphids
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 [...] their summer host plant, migrating to their winter host plant in autumn, where they reproduce sexually and lay eggs that overwinter. The summer host plants