Tiger Swallowtail Pterourus glaucus male female
Tiger Swallowtail Pterourus glaucus
Feb 22, 2016
male. female. Tiger Swallowtail Pterourus glaucus. male. female. What is up with this Tiger Swallowtail?. An actual specimen: no photoshop!. It’s a gynandromorph!. “gyn” means “female” “andro” means “male” “morph” means “form” “Gynandromorph” literally means part female and part male. - PowerPoint PPT Presentation
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Tiger SwallowtailPterourus glaucus
malefemale
What is up with this Tiger Swallowtail?
malefemale
An actual specimen: no photoshop!
It’s a gynandromorph!
• “gyn” means “female”• “andro” means “male”• “morph” means “form”• “Gynandromorph” literally means part
female and part male.
How does this happen?•Normally, in moths & butterflies:
XX = MaleXY = Female
•If the butterfly has two or more “X” chromosomes, it will develop as a male. With only one “X” chromosome, it will be a female.
•In arthropods, the first cell division differentiates left from right.
•Bilateral gynandromorphs arise by mitotic nondisjunction in the sex chromosomes at this one-two cell stage.
XX
XXduplicated
XXXmale female
X
Example #2
Male Female
Example #3
Example #4
Another Example: Blue Crab
malefemale
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