BIOC19H3 Lecture Notes - Lecture 1: Invagination, Endoderm, Mesoderm
Document Summary
Lecture 1 objectives: defining development biology, early ideas, studying development, model organisms in development, main development processes, generalized animal life cycle, life of a frog, fate maps. What is developmental bio: development: process of a progressive and continual change that results in the formation of complex organisms from single cell, single-> tissue->organ->organism. Genotype->phenotype: devlop bio def: study of processes that govern embryonic and other developmental processes throughout an organisms life. Genotype is genetic makeup, phenotype is observable features: dna->rna. ->protein->cell->>>organism. Variability in dna sequence causes various physical structures. These variations get passed from parent to offspring. Different cells that form different organs, allowing order within an organism: continuity of life. Cell theory of life: a cell is basic unit of life, living organism is made of cells, new cells are formed by division of previous cells. Egg is a highly specialized single cell: the continuity of life.
