Examlex
The smaller the random sample, the smaller the probability that the results will differ significantly from the whole population.
Testosterone
A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes but also in the ovaries and adrenal cortex.
Secondary Sex Characteristics
Physical traits that are not directly involved in reproduction but distinguish the sexes, such as breast development in females and beard growth in males.
Primary Sex Characteristics
The main organs and structures directly involved in reproduction.
Menarche
A primary sex characteristic in females; a female’s first menstrual period, which signals the ability to reproduce sexually.
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