Answer:
It is not accurate to say that snakes came from a sister species, as snakes are a diverse group of reptiles that have evolved over millions of years through natural selection. The wide variation of color in snakes is a result of natural selection, which favors traits that increase an individual's chances of survival and reproduction in a particular environment. In some cases, coloration may help snakes blend in with their surroundings, making them less visible to predators or prey. In other cases, bright colors may serve as a warning to potential predators that the snake is venomous or dangerous. The specific coloration of a snake is determined by a combination of genetic factors and environmental influences, such as diet, temperature, and humidity. Over time, snakes with advantageous coloration are more likely to survive and pass on their genes to the next generation, leading to the wide variation of color that we see in snakes today.