Why didn’t Darwin understand that genetics has passed on.

Darwin did not know that DNA would become an important part of his Theory of Evolution. In fact, the subcategory of evolution called microevolution is completely based on DNA and the mechanism of how genetic information is passed down from parents to offspring.

Explanation:

DARWIN'S DIFFICULTIES WITH BLENDING INHERITANCE AND HIS THEORY OF PANGENESIS. Darwin failed to understand the significance of these results because he had no model of particulate inheritance that could be applied to genetic data.

cells spend most of their time in interphase

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.