Genetic Adaptions - Amphibious

While Donovan is a genetically engineered soldier, her native people were far more advanced than humans in genetics and while they did gene engineering it was nothing like what happened prior to the Eugenics Wars on Earth with Kahn. She is not bred for superiority and was born naturally and had some genetic engineering done on her while still in her mother's womb, one of these was skin colour alteration when born she would show pink skin. These alterations would give her stamina, moderate strength high tolerance for pain and night vision. Her native People had visors too, mainly for when they were off-world, like all Trelan they saw each other in infrared, this would allow them to see body temperatures ranging from black to grey and all the yellows and oranges up to red. The Visors they had allowed them to see people in the normal sense. Her body chemistry was infused with samples of Human DNA from a Trelan probe sent to earth; unlike the full types of the blood of her people she has a standard human lifespan, she was bred to serve the Trelan armies as an Elite Commando. The only thing she shares with her Trelan ancestry is the Red eyes and mark on her forehead.

Donovan was removed from her parent's womb and was placed in a stasis birthing chamber, where tactics and all known ways of killing most combatants were given to her by synaptic suggestion, she was supposed to be the first of a new breed of Trelan soldiers; it turned out she was the only one as something happened shortly after she was placed in the chamber. She is built to survive without breathing gear in water environments without an EVA suit or a breather. a radioactive environment is not one of them. Part of her genetic engineering has gifted her with gills on her back, they are below the shoulder blades and tap directly into her lungs, she has basically an amphibian ability and is immune to most known human diseases' but is like any other species she can fall ill from some alien infections.

But like most sentient beings she can be killed by all known means that any being can be killed by. She also bleeds red where the Trelan used to bleed blue/green blood. She has one disadvantage and that is when she has her Visor or glasses on she sees in black and white with a red tint due to the eyewear. As she is essentially colour-blind with the eyewear on she cannot take up a technical position like in engineering or Demolition, she is Sniper/Adv Recon and Intelligence Agent for a reason. Donovan is prone to the majority of standard ailments, that humans or any other species may suffer from, she can grow old, get sick and die and she can bleed.

She was bred for combat and a short life, hence she can live till she is 100 tops, she was not built for longevity, the 100 years would be the maximum, while humans have been known to live past that. Her DNA does have one flaw and that is if her "species" survive combat and they reach 100 then their DNA breaks down and those who survive that long become infirm with Osteoporosis (Brittle Bone) and there is no cure for this, upon reaching 100 years she would become frail and absent-minded so after 100 years she is essentially dependant on nurses and carers, but not much more is known about her species as her creators are now extinct, what information is available comes from recordings she brought with her from what was found attached to her birthing chamber.

The M45 Assault Rifle was born out of a reluctant need for a defensive firearm after the Dominion/Breen Alliance used a modified form of an energy-dampening radiogenic isotope on Earth allowing only their weapons to work and both Starfleet and Klingon weapons to fail. while Alliance forces were pushed back on Earth and Kronos Starfleet R+D fell back on past technology where energy power packs were not used. The result was the M45 Assault rifle, like its fore-bearer weapons it used a 30-round manual loading Magazine and used Armour piercing rounds. It had two modes of fire Semi-automatic which allowed for a single shot and full automatic the finished plans were sent to Kronos with an explanation and the Klingons came up with their own design that looked different from the Terran weapon but worked on the same principle. The weapons used proved effective and pushed a surprised Dominion/Breen Alliance forces back, but it was a stop-gap weapon, leaders on both homeworlds knew that the Federation and Klingon Empires were finished, but both Empire troops would make the Dominion pay for their victories in blood.

The rifle was developed by Starfleet Security for use in dampening fields or radiogenic environments where conventional energy weapons would be useless. It was designed to fire a chemically propelled titanium bullet; in this, it was functionally very similar or perhaps identical to gunpowder arms. A working prototype of the weapon was developed, but Starfleet opted not to produce the weapon after the advent of the regenerative phaser beam.

The TR-116 could be operated by both right and left-handed shooters.

In 2375, Science Officer Chu'lak used a TR-116 rifle to murder fellow Starfleet officers Hector Ilario, Greta Vanderweg, and Zim Brott aboard the Bajoran space station Deep Space 9. Chu'lak modified the rifle with a micro-transporter, which allowed him to beam the bullet into another room, only 8-9 centimetres from its target. An exo-graphic targeting sensor allowed Chu'lak to scan through walls and target victims anywhere on the station from his quarters. Lieutenant Ezri Dax later used a similarly modified rifle to stop Chu'lak. (DS9: "Field of Fire")

Info Ref: Information Origin