The Similarity Between Intelligence Scores of Fraternal Twins Raised Together

question 18

Multiple Choice

The similarity between intelligence scores of fraternal twins raised together is

• A) equal to that between identical twins raised apart.
• B) less than that between children and their biological parents.
• C) equal to that between ordinary siblings raised together.
• D) less than that between identical twins raised apart.

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Definitions:

Basal Body Temperature Method

A method of tracking a woman's fertility by monitoring temperature changes throughout her menstrual cycle.

Fertility Awareness-Based Methods

A set of practices used to determine the fertile and infertile phases of a person's menstrual cycle to prevent or achieve pregnancy.

Ovulation

The phase in the menstrual cycle when an ovary releases an egg for possible fertilization, marking a woman's most fertile period.

Diaphragm

A dome-shaped, flexible barrier device inserted into the vagina to prevent pregnancy by covering the cervix.