> For the complete documentation index, see [llms.txt](https://docs.blockchaincuties.com/blockchain-cuties-universe-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockchaincuties.com/blockchain-cuties-universe-knowledge-base/bcu-mechanics/genome.md).

# Genome

![](/files/NMsdo75MWzBrhSUMfHfw)

Every cutie has a **unique** genome and its 64 genes might seem intimidating at first glance. In order to understand the genome, you must know how to decode it. These three tables represent the **64 genes** that every cutie has. Every **gene** can have a value from **"0-F"**. First, seven genes are reserved for system things like the update number, the animal type, nobility, promotion, and other things. Genes that influence the visual look of your cutie are called **"Dominant Genes"** and **"Recessive Genes"** one and two. **"Recessive Genes"** can become **"Dominant Genes"** when breeding two cuties. Both genomes of the parents are mixed up randomly.

When breeding occurs following things happen:

* System checks if any of the **"Recessive Genes"** have become dominant;
* First, there's a **4%** chance that any of the **"Recessive Genes #2"** of the parents can become **"Dominant Gene"** for the child cutie;
* Second, there's a **20%** chance that any of the **"Recessive Genes #1"** of the parents can become **"Dominant Gene"** for the child cutie;
* Child cuties genome is created by mixing both of the parents after the recessive genes have been checked, the **"Dominant Genes"** are set;
* Child's **"Recessive Genes"** one and two are set randomly from the parents **"Recessive Genes"**.

**Nobility** can be passed on to the child from the parents if both parents are noble the chance of such occasion is **5%**.

![](/files/9k4KRsgi9pKld5erjGI5)

| SYSTEM                     | DOMINANT GENES           |                             |        |          |      |           |      |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |    |    |
| -------------------------- | ------------------------ | --------------------------- | ------ | -------- | ---- | --------- | ---- | ----- | ---- | ---- | ---- | --- | ---- | --- | ---- | ---- | -------- | ---- | ---- | ---------------------- | ------------------------ | ---------------------- | ---- | -- | -- |
| General                    | Base Parts               | <p>Reserved</p><p>Parts</p> | Colors |          |      |           |      |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |    |    |
| <p>Update</p><p>Number</p> | <p>Animal</p><p>Type</p> | Noble                       | Promo  | Reserved | Hair | Moustache | Eyes | Mouth | Head | Ears | Body | Paw | Hand | Leg | Feet | Tail | HairBack | Nose | Body | <p>Big</p><p>Spots</p> | <p>Small</p><p>Spots</p> | <p>Add</p><p>Spots</p> | Eyes |    |    |
| 0                          | 1                        | 2                           | 3      | 4        | 5    | 6         | 7    | 8     | 9    | 10   | 11   | 12  | 13   | 14  | 15   | 16   | 17       | 18   | 19   | 20                     | 21                       | 22                     | 23   | 24 | 25 |

![](/files/Wu59KonTGbLmkzoiLe7c)

| RECESSIVE GENES #1 |                             |        |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |
| ------------------ | --------------------------- | ------ | ----- | ---- | ---- | ---- | --- | ---- | --- | ---- | ---- | -------- | ---- | ---- | ---------------------- | ------------------------ | ---------------------- | ---- |
| Base Parts         | <p>Reserved</p><p>Parts</p> | Colors |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |
| Hair               | Moustache                   | Eyes   | Mouth | Head | Ears | Body | Paw | Hand | Leg | Feet | Tail | HairBack | Nose | Body | <p>Big</p><p>Spots</p> | <p>Small</p><p>Spots</p> | <p>Add</p><p>Spots</p> | Eyes |
| 26                 | 27                          | 28     | 29    | 30   | 31   | 32   | 33  | 34   | 35  | 36   | 37   | 38       | 39   | 40   | 41                     | 42                       | 43                     | 44   |

![](/files/7XsDW9F5fzwMK9Ll6N99)

| RECESSIVE GENES #2 |                             |        |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |
| ------------------ | --------------------------- | ------ | ----- | ---- | ---- | ---- | --- | ---- | --- | ---- | ---- | -------- | ---- | ---- | ---------------------- | ------------------------ | ---------------------- | ---- |
| Base Parts         | <p>Reserved</p><p>Parts</p> | Colors |       |      |      |      |     |      |     |      |      |          |      |      |                        |                          |                        |      |
| Hair               | Moustache                   | Eyes   | Mouth | Head | Ears | Body | Paw | Hand | Leg | Feet | Tail | HairBack | Nose | Body | <p>Big</p><p>Spots</p> | <p>Small</p><p>Spots</p> | <p>Add</p><p>Spots</p> | Eyes |
| 45                 | 46                          | 47     | 48    | 49   | 50   | 51   | 52  | 53   | 54  | 55   | 56   | 57       | 58   | 59   | 60                     | 61                       | 62                     | 63   |