Developmental Biology 人的生长速率因发育阶段而异 Average growth after birth Male and female comparative growth rates Height Change (cm)180 in height 10 (cm/year) Girls 24681012141618 89101112131415161718 Age(years) Age (years) Fig. 14.4 Normal human growth comparative growth rates of boys and Left panel: an average growth curve girls. There is a growth spurt at puberty for a human male after birth. Right panel: in both sexes, which occurs earlier in girlsDevelopmental Biology 人的生长速率因发育阶段而异