I was randomly reading this Wiki article on Jasmine and this question crossed my mind after reading the following lines:
Jasmine can be either deciduous (leaves falling in autumn) or evergreen (green all year round), and can be erect, spreading, or climbing shrubs and vines.
How can a plant be both erect and climbing at the same time?
I have looked for genetic mechanisms related to this, correlating environmental or other stimulus with this phenomenon, but have not found a satisfactory explanation.
So how does this occur?