A larger study involving 90 sets of identical twins is now in progress to determine to what extent people's genes contribute to body fat and overweight.
(A larger study; involving; 90 sets of identical twins) (A larger study involving 90 sets of identical twins; is; T:now; in progress; to determine to what extent people's genes contribute to body fat and overweight) (extent people's genes; contribute; to body fat and overweight)
A larger study A larger study involving 90 sets of identical twins extent people's genes
involving is contribute
90 sets of identical twins
T:now in progress to determine to what extent people's genes contribute to body fat and overweight
to body fat and overweight