Multiple Choice
Which of the following is true of fraternal twins?
A) They are similar to nontwin siblings in that they share about 50% of their genes.
B) They are produced by the division of one fertilized egg.
C) They are always the same sex.
D) They have concordance rates that are higher than monozygotic twins if there is a genetic component involved in a studied characteristic.
Correct Answer:
Verified
Correct Answer:
Verified
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