Male and female sexes are often quite obvious in many species of animals in the natural world. Male birds, for example, can often have brightly colored feathers when compared to their female counterparts. Sometimes, though errors can occur in cell division of the fertilized and an organism can develop exhibiting both male and female characters (Wall, 2011). This error is fairly uncommon but a number of documented cases exist. For example, a number of butterfly species have been found that are bilateral gynandromorphs, each sex gets half of the insect: wings, genitalia, body size, and other sex-related features. Gynandromorphs can also form in insect species when a female has eggs which are fertilized by more than one sperm or from symbiotic bacterial infections (Parry, 2011). Bilateral gynandromorphs have also been documented in birds as well.
Works Cited:
Adams, J. (2014, December 11). Georgia Lepidoptera. Retrieved January 14, 2015, from http://www.daltonstate.edu/galeps/
Parry, W. (2011, May 31). Gender-Bender Bugs Impress Collectors. Retrieved January 14, 2015, from http://www.livescience.com/14207-gynandromorphs-butterfly-moths-arthropods-genetic-anomaly.html
Wall, T. (2011, May 31). A Gender-bender Colored Cardinal : DNews. Retrieved January 14, 2015, from http://news.discovery.com/animals/bi-color-cardinal-mystery-110531.htm
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