Incomparison to concordance rates for autism in dizygotic twins, monozygotic twins are blank likely to develop the same illness.

A significantly less
B somewhat less
C significantly more
D somewhat more
I believe the correct answer is C

2 answers

http://www.translatingautism.com/2008/08/autism-and-genetic-markers-cliffsnote.html

second paragraph.
I believe the correct answer is A. because mz twins are more likely than dz twins but this question reads as dz twins, mz twins, so dz should be less likely. Mz twins are 96% and dz is 24% to develop the same illness.