The question of homosexuality in animals has recently rearisen with the discovery that albatross, the bird with the lowest "divorce" rate, do not pair up exclusively heterosexually. This brings into question the idea that homosexuallity is a genetically inherited trait or whether it is environmentally founded. The term animal homosexuality is one that might not even be able to be used because it applies human traits to animals
The parallels of regenerative biology throughout the animal kingdom could unlock the differences in human regeneration, such as skin cells and animals such as the Paranais litoralis which can grow its limbs back. This relates to pluripotency within Therapeutic cloning
"At first glance, the differences between males and females seem obvious, since genitalia, morphology, and courtship behavior often vary greatly between the two sexes. However, the biological mechanisms that create these sex differences are still poorly understood in many species. A new study in Nature Neuroscience looks into how the gene doublesex (dsx) may help wire sex differences into the brain of the fruitfly Drosophila melanogaster. "
