Examlex
On average,boys tend to show early signs of puberty when they are approximately _____ years old.
Germinal Stage
The first fortnight of embryonic growth post-fertilization, marked by swift cellular proliferation and the onset of cell specialization.
Foetal Stage
The period in human development that begins about nine weeks after fertilization and continues until birth, during which significant growth and development occur.
Prenatal Development
The process of growth and development within the womb, where human beings develop from a single cell to a full-term infant.
Foetal Stage
The developmental period in humans from the ninth week after conception until birth, during which significant growth and organ development occur.
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