My attic keeps making sound and thombs wat does it mean iam creeped out right now it just happened and the lightbulb was shaking

1. Make sure it isnt something other than a ghost(i.e. something falling)

2. Record what you see and hear

3. See if anyone hears the same thing as you(unless your home alone)

4. Be confident and dont be fearful because ghost sense fear

5. Pray or perform an exorsism( if this is part of your religion)

6. After the ghost leaves, clean up.( like literally mops the floors and stuff. it keeps the ghosts out)

Good Luck ! :]

The answer is spontaneous mutation .  

Sometimes genes, for no known reason(s), change their form in a process called spontaneous mutation.  

Mutation is the actually the alteration of the nucleotide sequence of the genome of an organism, virus, or other genetic elements permanently.  

Spontaneous mutation : It is a process in which gene automatically for no reason change their form.