PSYA02H3 Lecture Notes - Lecture 4: Prenatal Development, Zygote, Egg Cell
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PSYA02H3 Full Course Notes
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Psya02 lecture 4 development: the early years. The scientific study of biological, cognitive, social and personality development throughout the life span. A major issue in developmental psychology is the nature-versus-nurture question. Do our traits and behaviours result from heredity (nature) or the environment (nurture) Human conception begins when a sperm penetrates the membrane of an ovum: when the two combine, a complete set of genetic instructions is formed, half from the father and half from the mother. The fertilized egg that is formed from the union of the sperm and egg is called a zygote. Germinal: begins with the formation of the zygote and ends after about 2 weeks, when the outer portion of the zygote"s developing cluster of cells has attached itself to the uterine wall. Embryonic: from 2 weeks to about 2 months, the major structures and organs of the body begin to develop, and the embryo starts to resemble a human being.
