Bee

Bees are a type of flying insect related to ants and wasps. They are an important pollinator of flowering plants, and vital to commercial growers in the United States. Many species of bees produce honey.

Bee genetics

Unfertilized eggs laid by a queen bee contain 50% of her genes in different combinations. These eggs develop into male bees (drones) that have one copy of each chromosome. All sperm produced by a drone are identical clones. > http://news.nationalgeographic.com/news/2004/10/1005_041005_honeybees.html </ref>

This decline is considered to be the result of diseases such as the varroa mite and other parasites, and the widespread practice of spraying crops with pesticides. Some scientists have asserted that the increased use of genetically modified crops may have a role to play, but the evidence for that is not yet clear.