Which of the following was Darwin unaware of: Question 2 options: Genetic material within cells provides evidence of species relationships Biodiversity can be explained without relying on supernatural creation Change in populations over time in response to the environment Branching relationships between groups of organisms Genetic material within cells provides evidence of species relationships Biodiversity can be explained without relying on supernatural creation Change in populations over time in response to the environment Branching relationships between groups of organisms Solution Genetic material within cells provides evidence of species relationships..... darwin worked before the era of genetics.