After an amniocentesis, a 29-year-old woman who is carrying twins learns that one fetus has XY chromosomes and the other has XX chromosomes. At 37 weeks 'gestation, the woman delivers two healthy babies. Which of the following structure is likely to be present in the baby with the XY chromosomes but not in the one with XX chromosomes?

After an amniocentesis, a 29-year-old woman who is carrying twins learns that one fetus has XY chromosomes and the other has XX chromosomes. At 37 weeks 'gestation, the woman delivers two healthy babies. Which of the following structure is likely to be present in the baby with the XY chromosomes but not in the one with XX chromosomes?

After an amniocentesis, a 29-year-old woman who is carrying twins learns that one fetus has XY chromosomes and the other has XX chromosomes. At 37 weeks 'gestation, the woman delivers two healthy babies. Which of the following structure is likely to be present in the baby with the XY chromosomes but not in the one with XX chromosomes?



(A)Bulbospongiosus muscle
(B)Bulbourethral gland
(C)Corpus cavernosum
(D)Membranous urethra
(E)Perineal body

Answer: B: Bulbourethral gland