Gray aphid (sap sucking insects) had offspring that evolved into red aphids through horizontal gene transfer of carotenoid genes from a fungus. These genes can produce yellow, green and red pigments...

Extracted text: Gray aphid (sap sucking insects) had offspring that evolved into red aphids through horizontal gene transfer of carotenoid genes from a fungus. These genes can produce yellow, green and red pigments after the gene duplicated in the aphid genome. Later, biologists discovered pea aphids which only carry the green carotenoids. Which microevolutionary change does the aphid story a good example? microevolution by genetic drift microevolution by horizontal gene transfer microevolution by a single mutation which deleted yellow and red pigment genes to produce green aphids microevolution by a two mutation which initially duplicated carotenoid genes, then deleted yellow and red pigment genes to produce green aphids microevolution by a three mutation which initially occured by horizontal gene transfer, then by duplicated carotenoid genes, then deleted yellow and red pigment genes to produce green aphids