I'm scared of getting fat like everyone else in my family. Can I lose weight if it's in my genes?

I'm big boned but also, steadily gaining weight and am more aware of it now than before. Everyone on my father's side of my family are all quite large people and big boned too but visibly have fat. Is it possible that I don't have to turn out like them? I was also wondering whether it is possible for someone who has this 'gene' to become anorexic. Please could someone help me as I'd like to know how and if I can lose weight. Thank you so much!