Answer:
B. Fraternal twins have different chromosomes.
Explanation:
Fraternal twins, also called dizygotic or biviteline; are those formed from different eggs and sperm, but which developed in the same period. These do not share the same chorion, nor can the same chromosomes be as distinct as non-twin brothers with different sexes or even blood groups. The umbilical cord and amnion of each are independently developed; but they may have the same placenta when implanted in the womb in nearby regions.
