ants bees wasps unfertilized eggs male offspring

An unfertilized egg can become a male bee

In most ants, bees and wasps, the egg-laying female controls whether an egg is fertilized. Fertilized eggs develop as females, while unfertilized eggs develop as males. This unusual system gives females different patterns of genetic relatedness from those found in most animals.

Inca roads kept armies supplied as they moved

Food And Rest Every Day’S Journey

Along major Inca roads, shelters and food stores were placed at regular stops. This system let armies move quickly while finding food and a place to rest about every day’s journey.

American aid likely saved millions in famine

During Russia’s 1921–22 famine, the American Relief Administration likely saved millions of lives. Its director, Herbert Hoover, was a devoted anti-communist, but argued that starving people should be fed regardless of their politics.

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ants bees wasps unfertilized eggs male offspring

An unfertilized egg can become a male bee

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