Knowledge of fetal development

Apply your knowledge of fetal development to the following situation. Rebecca comes in for her 12-week checkup. She measures larger than expected for dates, so the health care provider orders a sonogram. a. Rebecca asks you to tell her what her baby looks like at this stage. How will you answer? b. The sonogram shows that Rebecca is carrying twins. She wants to know whether they are identical or fraternal. How will you answer her?