Prompt
Create an image of a book cover with the title "The Extended Phenotype" and a subtitle that reads "The Gene-Centered View of Evolution". The cover should feature a simple, yet striking design that incorporates elements of nature, such as a bird's nest or a tree branch, to represent the idea that genes can influence phenotypes beyond the organism's body. The color scheme should be earthy and muted, with shades of green, brown, and beige. The font should be clear and readable, with the title in a larger font size than the subtitle. In the background, a subtle image of a DNA double helix or a microscopic view of cells could be visible, adding a layer of depth to the design. The overall style should be reminiscent of a classic scientific textbook from the 1980s, with a hint of modernity to reflect the book's enduring influence in the field of evolutionary biology.