Australasian Science: Australia's authority on science since 1938

The Evolving Story of Heredity

A female neriid fly (bottom right) lays eggs on rotten tree bark while her mate fights off an interloper. Credit: Russell Bonduriansky

A female neriid fly (bottom right) lays eggs on rotten tree bark while her mate fights off an interloper. Credit: Russell Bonduriansky

By Angela Crean & Russell Bonduriansky

Biologists are discovering that there is a lot more to heredity than genes. In the latest twist, it turns out that offspring size in an Australian fly species can be determined by the diet of its mother’s previous mating partner.

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