Lec 1 Overview

Lec 1 Overview - Welcome Developmental Biology Bio 361 Dr...

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Developmental Biology Bio 361 Dr. BJ Grubb   Welcome
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Life Cycle
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What is the Focus of Embryology and Developmental Biology? Embryology focuses on: The process of getting from egg to adult by making an embryo Developmental Biology has a broader focus of: How can we successfully continue to repeat this process from generation to generation by creating the sexually mature adult.
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Development accomplishes two major objectives I. Cellular Diversity and Order “within’ each generation II. Ensures continuity of Life from one generation to the next
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A Field of Science is Defined by the Questions it seeks to Answer Developmental Questions: How does the fertilized egg give rise to the adult body? How does the adult body produce yet another adult body?
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These Questions can be divided many categories of study for the Developmental Biologist 1. DIFFERENTIATION 2. MORPHOGENESIS 3. GROWTH 4. MATURATION 5. REPRODUCTION 6. AGING
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1. DIFFERENTIATION How can the fertilized egg generate so many different cell types? Differentiation - generation of cellular diversity
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2. MORPHOGENESIS implantation-gestation in human reproduction.mov How can the cells form such ordered structures? Morphogenesis - the organization of differentiated cells (i.e. the creation
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3. GROWTH How is cell division so tightly regulated? Growth - cells get larger in size and/or increase in number
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4. Maturation or Metamorphosis Maturation - to change from a juvenile form to a sexually mature form
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5. REPRODUCTION ovum and sperm.gif How are germ cells (the egg and sperm) set apart to form the next generation, and what are the instructions in the nucleus and cytoplasm that allow them to function this way? Reproduction - generation of offspring
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6. Aging ging – A normal process of defined as a time-related deterioration the physiological functions necessary for survival and fertility.
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7. EVOLUTION How do changes in development create new body forms? Which heritable changes are possible
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This note was uploaded on 11/26/2011 for the course BIO 361 taught by Professor Dr.bjgrubb during the Fall '10 term at N.C. A&T.

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Lec 1 Overview - Welcome Developmental Biology Bio 361 Dr...

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