Is there a link between the melting and boiling points in crude oil?

Question: Is there a link between the melting and boiling points in crude oil?
- Keywords:
  boiling,
  boiling point,
  crude,
  melting,
  melting point,
  oil
Asked by goddess to Jemma on 11 Mar 2011.
- Jemma Ransom answered on 11 Mar 2011:
  
  I’m not really a chemist, but my guess is that melting and boiling points are related to the molecular weight of whatever substance you’re looking at. I guess wikipedia might know!

Question: Is there a link between the melting and boiling points in crude oil?