No.........Incas did not know how to do gene mutation science. I don't think they were first to domesticate llamas either.
Llamas
Potatoes & llamas
Llamas were domesticated by the Incas for their wool, meat, and ability to carry heavy loads in the Andes Mountains. They played a vital role in Incan society as a source of transportation and food, and their wool was used for textiles.
Goats and sheep.
by llamas
The Incas used Llamas for Transportation,wool,and food
The incas had llamas as pets. They their llamas for carrying goods and traveling.
The Incas used llamas for transportation purposes until they got horses from the Spanish. So yes, the Incas did have horses.
The Inca traveled on foot, or used llamas.
Llamas, alpacas.
The Incas sacrificed animals such as alpacas and llamas.
The Llama was the most important animal to the Incas. Indeed a mans worth was measured in Llamas