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Development before birth, or prenatal development (from Latin natalis 'relating to birth') is the process in which a zygote, and later an embryo, and then a fetus develops during gestation. Prenatal development starts with fertilization and the formation of the zygote , the first stage in embryonic development which continues in fetal ...
He determined that growth is best measured not quantitatively but in patterns. A pattern can be anything that has a definite shape or form [10] such as an eye blink. Gesell looked for patterns in the process by which actions become organized; for example, the steps in the development of eye-hand coordination. [10]
Developmental biology, the study of the process by which animals and plants grow and develop; Prenatal development, also called fetal development, or embryology; Human development (biology), the process of growing to maturity. In biological terms, this entails growth from a one-celled zygote to an adult human being
An example is overbright smiling or laughing in the context of present danger or while experiencing pain. Victoria Climbié is considered a good case example. [2] [29] At age eight she was murdered by caregiver abuse and neglect. Her physical scars and other signs of abuse were seen by multiple professionals and agencies, including doctors ...
The initial stages of human embryogenesis Parts of a human embryo. Ontogeny (also ontogenesis) is the origination and development of an organism (both physical and psychological, e.g., moral development [1]), usually from the time of fertilization of the egg to adult. The term can also be used to refer to the study of the entirety of an ...
Neoteny in humans is the slowing or delaying of body development, compared to non-human primates, resulting in features such as a large head, a flat face, and relatively short arms. These neotenic changes may have been brought about by sexual selection in human evolution .
A life history strategy is the "age- and stage-specific patterns" [2] and timing of events that make up an organism's life, such as birth, weaning, maturation, death, etc. [3] These events, notably juvenile development, age of sexual maturity, first reproduction, number of offspring and level of parental investment, senescence and death, depend ...
In biology, folliculogenesis is the maturation of the ovarian follicle, a densely packed shell of somatic cells that contains an immature oocyte. Folliculogenesis describes the progression of a number of small primordial follicles into large preovulatory follicles that occurs in part during the menstrual cycle .