Table 2

Adolescence in boys and girls manifests differently with regard to their actual fertility.



Become fertile approximately 2 years after onset of growth spurt; 1 year before peak height velocity

Completed half their breast and pubic hair development by peak height velocity; menarche approximately 1 year after peak height velocity

Remain juvenile in body hair, stature, muscularity and voice

Appear feminine, while remain infertile

Muscle spurt and adult stature still four years away; approximately 18 years

Adult frequency of ovulation and adult size of birth canal; approximately age 18 years

Learn adult social roles while sexually mature, but not perceived mature by adults

Learn adult social roles while infertile, but perceived by adults as mature

Hochberg and Belsky BMC Medicine 2013 11:113   doi:10.1186/1741-7015-11-113

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