gynandromorphs

10

Chemera and Mosaic Insects Part 2-Butterflies and Moths

A chimera (also spelled chimaera) (from the creature Chimera in Greek mythology) is a single organism composed of cells from different zygotes. This can result in male and female organs, two blood types, or subtle variations in form. Animal chimeras are produced by the merger of multiple fertilized eggs.  If the different cells have emerged from the same zygote, the organism is called a mosaic. Chimeras are formed from at least four parent cells (two fertilised eggs or early embryos fused together). Each population of cells keeps its own character and the resulting organism is a mixture of tissues. Chimeras can often breed, but the fertility and type of offspring depends on which cell line gave rise to the ovaries or testes; varying degrees of intersex differences may result if one set of cells is genetically female and another genetically male. A gynandromorph is an organism that contains both male and female characteristics, authorities say. The term gynandromorph, from Greek “gyne” female and “andro” male, is mainly used in the field of entomology, though it has also been observed in arthropods and birds as well. Another way that chimærism can occur in animals is by organ transplantation, giving one individual tissues that developed from two genomes. For example, a bone marrow transplant can change someone’s blood type. Normally, chimærism is not visible on casual inspection; however, it has been detected in the course of proving parentage and may be more common than was believed before the advent of DNA testing.

2

I’ve been thinking a lot about the gynandromorph bee. I realized because of the way bee chromosomes work, they’d have way more Harvey Dent shit going on than just the secondary sex characteristics. Rather like how calico cats are expressing coloration on different X chromosomes in chunks and patches, this bee would be expressing different chromosome’s ideas about what their coloration should be - except instead of one chromosome or the other, it’d be one or both.

They’ve got something of a place in the world forming in my head as a result of all my recent brain activity. Now if only I could decide their name!

10

Chimera and Mosaic Birds Part 2-Psittacines and Galliformes

A chimera (also spelled chimaera) (from the creature Chimera in Greek mythology) is a single organism composed of cells from different zygotes. This can result in male and female organs, two blood types, or subtle variations in form. Animal chimeras are produced by the merger of multiple fertilized eggs.  If the different cells have emerged from the same zygote, the organism is called a mosaic. Chimeras are formed from at least four parent cells (two fertilised eggs or early embryos fused together). Each population of cells keeps its own character and the resulting organism is a mixture of tissues. Chimeras can often breed, but the fertility and type of offspring depends on which cell line gave rise to the ovaries or testes; varying degrees of intersex differences may result if one set of cells is genetically female and another genetically male. A gynandromorph is an organism that contains both male and female characteristics, authorities say. The term gynandromorph, from Greek “gyne” female and “andro” male, is mainly used in the field of entomology, though it has also been observed in arthropods and birds as well. Another way that chimærism can occur in animals is by organ transplantation, giving one individual tissues that developed from two genomes. For example, a bone marrow transplant can change someone’s blood type. Normally, chimærism is not visible on casual inspection; however, it has been detected in the course of proving parentage and may be more common than was believed before the advent of DNA testing.

Half-and-half butterflies

The Milwaukee Public Museum has a collection of gynandromorph butterflies — meaning they are half male and half female, but they may or may not have reproductive tissues that have no recognizable female or male structure, or they may have both kinds of genitalia. (Source)

A gynandromorphic butterfly. 

gynandromorph: “a gynandromorph is an organism that contains both male and female characteristics. The term gynandromorph, from Greek “gyne” female and “andro” male, is mainly used in the field of entomology. These characteristics can be seen in butterflies, where both male and female characteristics can be seen physically because of sexual dimorphism.”

» source not known, please contact me if you find it!

youtube

Gynandromorphs: Dual-Sex Animals

SciShow explores one of the more rare and unusual results of sexual reproduction: gynandromorphy, in which an animal is part male and part female.