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Half-and-half male-female Great Mormon butterfly emerges
An "extremely rare" half male, half female butterfly, known as a gynandromorph, has been found in Hertfordshire.
The Great Mormon was discovered at Butterfly World in St Albans.
The sex division occurs straight down the middle of the abdomen and is visible in the different wing patterns, with the female half on the right.
Butterfly World said this natural phenomenon occurred in only one in 10,000, or 0.01% of butterflies.
A lepidopterist at the centre, Louise Hawkins, said the phenomenon happens "very early on" in the development of a butterfly when the "sex chromosomes don't divide properly".
http://www.bbc.com/news/uk-england-beds-bucks-herts-34603474
The Great Mormon was discovered at Butterfly World in St Albans.
The sex division occurs straight down the middle of the abdomen and is visible in the different wing patterns, with the female half on the right.
Butterfly World said this natural phenomenon occurred in only one in 10,000, or 0.01% of butterflies.
A lepidopterist at the centre, Louise Hawkins, said the phenomenon happens "very early on" in the development of a butterfly when the "sex chromosomes don't divide properly".
http://www.bbc.com/news/uk-england-beds-bucks-herts-34603474
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