Is it normal for growing plants to tilt to one side?

I am growing Morning Glory seeds and they are growing great but they are starting to tilt a little in the middle the leaves are still growing is that normal? should i fix it or will it straighten up again?

Is it normal for growing plants to tilt to one side?
yes they follow the sun

goodluck
Reply:It's fascinating. There is a protein in growing plants that decays in sunlight. This causes a slow down in growth on the side that faces the sun, and the plant leans towards it. It is perfectly normal.
Reply:Yes. It's called phototropism. Turn the pot and they will lean that way, too.
Reply:Morning glory is a vine and needs supporting after 5 or 6 inches.