A mother gives birth to a set of twins-one boy and one girl. Which of the following MUST be true about these twins?

A) They are monozygotic.
B) They are dizygotic.
C) The boy is physically larger than the girl.
D) The girl was delivered before the boy.

Question

Vinayak Tanksali · Accepted Answer

Final Answer : B, Explanation :  The fact that there is one boy and one girl indicates that the twins are dizygotic (fraternal) rather than monozygotic (identical). There is no information given about the physical size of the twins or the order in which they were delivered.

A mother gives birth to a set of twins-one boy and one girl. Which of the following MUST be true about these twins?

A) They are monozygotic.
B) They are dizygotic.
C) The boy is physically larger than the girl.
D) The girl was delivered before the boy.

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Learning Objectives

Related questions

A mother gives birth to a set of twins-one boy and one girl. Which of the following MUST be true about these twins?A) They are monozygotic.B) They are dizygotic.C) The boy is physically larger than the girl.D) The girl was delivered before the boy.

Definitions

Learning Objectives

Learning Objectives

Related questions

A mother gives birth to a set of twins-one boy and one girl. Which of the following MUST be true about these twins?

A) They are monozygotic.
B) They are dizygotic.
C) The boy is physically larger than the girl.
D) The girl was delivered before the boy.