Trait Gene

A **Trait gene** is a genetic modification in *Jurassic World Evolution* that can be applied to dinosaurs to increase one or more of their in-game traits. Unique genes or gene stages are unlocked on every island. The *Secrets of Dr. Wu* DLC added additional Trait Genes.

## Description

Trait Genes come in a variety of forms and can all be applied to all dinosaurs. All genes, aside from the default Null Gene, will lower a dinosaur’s viability percentage resulting in the possibility of a failed incubation. Most genes have different stages with increased effects that can be unlocked on different islands.

## List of trait genes

### Base game

#### NULL Gene

NULL Gene is the default trait gene in *Evolution*. NULL genes from the American bullfrog (Rana catesbeiana) are carefully chosen to stitch together gaps in genomes, while minimizing overall effects on development.

#### Aggressive Instincts

Aggressive Instincts is a gene that increases a dinosaur's attack and defense traits. Pit viper (Bothriopsis medusa) DNA encourages offense as the best defense.

#### Brain Ageing

Brain Ageing, also known as Slowed Brain Ageing, is a gene that increases a dinosaur's defense and lifespan traits. The DNA of green sea turtles (Chelonia mydas) exhibits longerlasting brain cells.

#### Cardio Strength

Cardio Strength, also known as Heart and Lung Muscle Strength, is a gene that increases a dinosaur's lifespan trait. Vampire bat (Diaemus youngi) DNA can be used to develop powerful muscle tissues for the heart and lungs.

Cardio Strength 2.0 is unlocked on Isla Matanceros by progressing in Science Division.

#### Hyperefficient Blood

Hyperefficient Blood, also known as Hyperefficient Blood Cells, is a gene that increases a dinosaur's attack, lifespan, and resilience traits. Red blood cells with king crab (Paralithodes camtschaticus) DNA perform efficiently in cold and hostile environments.

#### Immune Response

Immune Response, also known as Intense Immune Response, is a gene that increases a dinosaur's lifespan and resilience traits. Grey reef shark (Carcharhinus amblyrhynchos) DNA provides significant resistance to diseases, including cancer.

#### Increased Bone Density

Increased Bone Density is a gene that increases a dinosaur's attack, defense, and resilience traits. Alpine ibex (Capra ibex) DNA enables the support of heavy weight through increased bone density.

#### Intensive Repair

Intensive Repair, also known as Intensive Skin Repair, is a gene that increases a dinosaur's defense and resilience traits. The properties of anole lizard (Anolis carolinensis) DNA that regrow lost tails significantly promote healthy tissue regeneration.

#### Intuitive Learning

Intuitive Learning is a gene that increases a dinosaur's attack and resilience traits. Tests show crow (Corvus corax) DNA forming rapid neural connections in the brain.

#### Rapid Metabolism

Rapid Metabolism is a gene that increases a dinosaur's defense, lifespan, and resilience traits. DNA from the rufous hummingbird (Selasphorus rufus) processes food rapidly to keep up with a constant demand for energy.

#### Reaction Speed

Reaction Speed, also known as Quick Reaction Times, is a gene that increases a dinosaur's attack and lifespan traits. Mantis shrimp (Squilla mantis) DNA sharpens reactions with highly efficient nerves.

#### Robust Digestion

Robust Digestion is a gene that increases a dinosaur's resilience trait. Monitor lizard (Varanus komodoensis) DNA encourages speedy and efficient digestion of all kinds of food sources.

#### Skin Toughness

Skin Toughness, also known as Scale and Skin Toughness, is a gene that increases a dinosaur's defense trait. American crocodile (Crocodylus acutus) DNA forms durable bony deposits (osteoderms) for tougher skin.

#### Strong Muscle Fibers

Strong Muscle Fibers, also known as Fast Twitch Muscle Fibers, is a gene that increases a dinosaur's attack, defense, and lifespan traits. DNA from the emperor dragonfly (Anax imperator) creates high performance muscle around critical joints.

#### Tooth Hardness

Tooth Hardness, also known as Tooth and Claw Hardness, is a gene that increases a dinosaur's attack trait. DNA for stag beetle (Lucanas cervus) exoskeletons creates incredibly hard keratin for teeth and claws.

### *Secrets of Dr. Wu*

#### Adaptive Camouflage

Adaptive Camouflage is a gene that allows the *Indominus rex* to camouflage. Cuttlefish (Sepia officinalis) DNA forms chromatophores with the ability to change color rapidly. Adaptive camouflage can be used to evade threats, to communicate, or to ambush prey.

#### Confined Space Adaptation

Confined Space Adaptation is a gene that lowers the amount of grassland and forest a dinosaur requires in its enclosure. DNA from the Burrowing owl (Athene cunicularia) creates dinosaurs that deal well with small enclosures.

#### Cross Species Adaptation

Cross Species Adaptation is a gene that raises the minimum and maximum population requirements of a dinosaur. Bottlenose Dolphin (Tursiops truncatus) DNA creates dinosaurs that thrive in groups containing other species.

#### Forest Adaptation

Forest Adaptation is a gene that lowers the amount of grassland a dinosaur requires in its enclosure while raising the required amount of forest. Dinosaurs augmented with Toco Toucan (Ramphastos toco) DNA have a tendency to prefer forested areas.

#### Grassland Adaptation

Grassland Adaptation is a gene that lowers the amount of forest a dinosaur requires in its enclosure while raising the required amount of grassland. Dinosaurs augmented with Common eland (Taurotragus oryx) DNA prefer more open grass areas over forest.

#### Group Adaptation

Group Adaptation is a gene that raises the minimum and maximum social requirements of a dinosaur. Wolf (Canis lupus) DNA creates dinosaurs that feel more comfortable in groups of their own species.

#### Rapid Stress Response

Rapid Stress Response is a gene that raises the comfort threshold, below which a dinosaur will become a danger to guests. Narwhal (Monodon monoceros) DNA creates prestigious dinosaurs that do not thrive in captivity.

#### Single Species Adaptation

Single Species Adaptation is a gene that lowers the minimum and maximum population requirements of a dinosaur. Dinosaurs with Jack Dempsey cichlid (Rocio octofasciata) DNA are territorial and prefer not to share their enclosure with other species.

#### Solitary Adaptation

Solitary Adaptation is a gene that lowers the minimum and maximum social requirements of a dinosaur. Dinosaurs with DNA From the European Mantis (Mantis religiosa) prefer not to share their enclosure with any other animals.

#### Stress Inhibitor

Stress Inhibitor is a gene that lowers the comfort threshold, below which a dinosaur will become a danger to guests. DNA from the Capybara (Hydrochoerus hydrochaeris) decreases communication between neurons in the brain, helping dinosaurs adapt well to stressful situations. Relatively speaking.