Jack and Jill are _____ twins. They are the result of _____.单项选择题

A

gamete; two ova that were fertilized by one sperm

B

zygotic; one ovum that was fertilized by two sperm

C

dizygotic; two separate ova that were fertilized by two different sperm

D

monozygotic; one ovum fertilized by one sperm that split into two zygotes

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Question at position 3 What are “dizygotic twins”?Twins who developed from a single fertilized eggTwins who developed from different fertilized eggsTwins who were reared by the same familyTwins who were reared by different families

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