Question 1
Which statement concerning relationships applies to young people in virtually all cultures?
◦ Commitment is a typical feature of these relationships.
◦ Feelings of passion appear to be a universal characteristic.
◦ Most marriages begin during adolescence.
◦ Dating/courtship is a universal experience.
Question 2
Why are girls who have sexual intercourse soon after menarche less likely to get pregnant than if they delay intercourse until at least two years later?
◦ The boys with whom they may be having intercourse are unlikely to have fully developed sperm in their semen.
◦ They will be more cautions and therefore more likely to use condoms or other forms of contraception.
◦ Their reproductive systems will not be mature enough to support a pregnancy.
◦ Ovulation is irregular for the first two years after menarche.
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The Secular Trend in Age of Menarche
The Secular Trend in Menarche in Five Western Nations
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Sexual Reproduction in Plants