Humans are born with a gender. It is either male or female and in some cases as a transgender. But we do not have the choice/capability to change our gender as this capability the Mother Nature has not given us. Even though it is possible with surgery and medical procedure to change but the surgery is spread over a long period, expensive and only done on the advice of medical practitioners and psychologists in some cases only. The option is either/ or only.
Most of us have seen the famous blockbuster film the “Jurassic Park”. The picture is based on creation of an island, where the dinosaurs are hatched from eggs in the lab and then released on the island for the visitors to get a glimpse of them. In Jurassic Park all the dinosaurs are male so as to keep the population in check. But in the end we see the velociraptors population growing, due to breeding. We are also shown their nests and eggs. Finally the island had to be destroyed so that it does not become a threat to Human population. How many of us have wondered as to how this was possible that velociraptors were able to mate and have off springs even though only males were created in the lab? The answer lies in the beginning of the movie where in the auditorium the procedure of creation is revealed. The DNA of the vlociraptor had a broken link and this link was restored in the lab by using the link from the DNA of African Green Frog. This African green frog has an amazing ability given to it by nature that it has the capability to chnange its sex. If the population of frog consists of males, then some frogs change their sex to female. This process is called protogyny and occurs when a population is too heavily skewed towards male. Inadvertently the scientists at Jurassic Park gave this ability to the velociraptors due to a DNA link of African frog being given to the DNA chain of velociraptor and hence some changed over to female as the population was only of males and the result was the increase in their population.
Even though humans do not have this capability but a large number of animals have this capability besides African frog. Some of them are bisexual like copperhead snake which are capable of virgin birth as females fertilize their own eggs. Some butterflies have both the characteristics of male and female and this normally happens in one out of 10,000 cases. Hawkfish has an amazing ability that it starts off as a female that can morph into male if required when situation calls for it and again change back to female if required. Humped Wrasse can change over from female to male. Sea Bass found in USA can also change over female to male depending upon supply and demand. Clownfish born of one sex can change over to other if necessary. Male bearded dragons, green sea turtles, cardinal, Banana slys and common reed frog, etc all have these capabilities.
I do not know whether we humans were given this capability to change or not or if given we have lost it due to some reasons or our inability to exploit this amazing capability. In some cases of animals like sea, bearded dragons, etc this change can even occur at the time of birth and is strongly dependent upon sea and sand temperatures.
