BIOL 221 Lecture Notes - Lecture 1: Zona Pellucida, Fallopian Tube, Spermatozoon
16 Sep 2016
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Document Summary
29. 1 development, marked by various stages, is a continuous process that occurs from fertilization to maturity (pg. Development: the gradual modification of anatomical structures and physiological characteristics during the period from fertilization to maturity. Differentiation: the process through which different types of cells required for specialized functions. This occurs through selective pressures that call for some genes to be turned off and some to be turned on. Fertilization/conception: where the male and female gametes fuse and development begins. Embryonic development: includes events during the first two months after fertilization: the study is called embryology. Fetal development: the events beginning in the ninth week and continuing until birth. Prenatal development: an umbrella term for embryonic and fetal development. Postnatal development: begins at birth and continues until maturity. Maturity: the state of full development or completed growth. Inheritance/ heredity: the transfer of genetically determined characteristics from generation to generation. Genetics: the study of the mechanisms responsible for inheritance.
