Beauty and Biology

“The lack of physical attraction was fatal” Spencer wrote of his rejection of George Eliot love.  He argued that biology was interfering in his ability to respond to her.  Are we predetermined biologically to be attracted to a beautiful object or a person?  Daniel in “Daniel Deronda” (Eliot 1876) asks: “Was she beautiful or not beautiful? And what was the secret of form or expression which gave the dynamic quality to her glance?”

How do we determine beauty in our culture?  Is it a necessary component in Art, in humans?