(biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level;
"he proposed an indicator of osseous development in children"
例句
Thyroxine and cortison may play role in the ontogenesis of growth hormone. 皮质醇、甲状腺素在生长激素的个体发生中起一定作用。
These processes are observed during ontogenesis, tumor progression, ischemic disease or physical training. 这些过程可在个体发育，肿瘤进展，局部缺血性疾病或体检中发现。
These processes are obsered during ontogenesis, tumor progression, ischemic disease or physical training. 这些过程可在个体发育，肿瘤进展，局部缺血性疾病或体检中发现。
In ontogenesis，gene according to certain when，the spatial order have the choice expression. 个体发育中，基因按一定的时、空次序有选择地表达。
The social nature of human activity as the product of phylogenesis as well as of the ontogenesis of the individual child. 人的活动具有社会性，这是人类进化发展的结果，也是儿童发育成熟的结果。
Since the nineteenth century, the morphology, structure, ontogenesis, origin and molecular biology of angiosperm ovules have been studied in detail. 19世纪以来，人们从形态结构、发生发育、起源及分子生物学等方面对胚珠进行了大量的研究。
