Biological influences on body weight include genetics (such as the fto-associated gene), metabolic factors (such as low levels of thyroid hormone), and physiologic factors (such as abnormal levels of various appetite-regulating hormones). from the list below, choose all the correct statements about biological influences on body weight.

select all that apply.
a. obesity is associated with lower amounts of ucp1.
b. the thrifty gene theory suggests that people with this gene universally expend more energy compared to those without the gene.
c. the set-point theory suggests that the body responds to both energy restriction and overeating with physiological changes to maintain its weight within a narrow range.
d. genetic factors account for 20 to 50% of a person’s bmi.
e. people who have the fat mass and obesity (fto)-associated gene are generally heavier than those without the gene.