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heredity and environment

Chapter 2. heredity and environment. Heredity and Environment. Molecular Genetics. Major Features of a Typical Cell. Computer-Generated Stimulation of DNA Molecule.

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heredity and environment

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  1. Chapter 2 heredity and environment

  2. Heredity and Environment

  3. Molecular Genetics

  4. Major Features of a Typical Cell

  5. Computer-Generated Stimulation of DNA Molecule Note the twisted ladder-like structure, referred to as a double helix. Base pairs form the rungs on the DNA ladder, (here in blue and purple), and their sequence determines the genetic traits that are carried in the DNA of each individual.

  6. Segment of DNA Visualized as Ladder

  7. How Can Such a Simple System Dictate How Life Unfolds? • Number of base pairs in DNA molecule are very large • Different species, and even different individuals within the same species, have different numbers of base pairs in their genome • Order of pairing is important According to the Human Genome Project, all humans are 99.9% genetically identical.

  8. What Is Protein Synthesis?

  9. Common Proteins and Their Functions in the Human Body

  10. Genes, Chromosomes, and Cell Division

  11. Human Karyotypes

  12. Cell Division and Reproduction

  13. Comparison of Mitosis and Meiosis

  14. From Genotype to Phenotype

  15. From Genotype to Phenotype

  16. Examples of Dominant-Recessive Gene Combinations

  17. Genetic Inheritance Hypothetically, the same parents can produce hundreds of trillions of unique children.

  18. Genetic Inheritance

  19. Genetic and Chromosomal Disorders

  20. Crossing Over of Chromosomes Sometimes during meiosis parts of chromosomes cross over, which creates new combinations of genes on a chromosome. Source: Derived from Life (4th ed.), by R. Lewis, D. Gaffin, M. Hoefnagels, and B. Parker, 2002, New York: McGraw-Hill.

  21. Gene-Environment Interactions:The Study of Epigenetics

  22. Some Sex-Linked Disorders

  23. Autosomal Disorders

  24. Genetic Research

  25. Video Clip Description of different types of genetic testing: http://www.youtube.com/watch?v=dJuo937gz44

  26. Video Clip • BBC documentary on Designer Babies with commentary by Princeton professor Lee Silver: • http://www.youtube.com/watch?v=TN9ep4B9Hw0&feature=PlayList&p=C7E239A945F4C4BA&playnext=1&playnext_from=PL&index=56

  27. Behavior Genetics What is a concordance rate? Let’s find out.

  28. Behavior Genetics

  29. Behavior Genetics Studies

  30. Environmental Influences and Contexts

  31. A Typical Classical Conditioning Procedure

  32. Operant Conditioning

  33. Applied Behavior Analysis

  34. Family and Culture

  35. Stop and Think! • Your textbook suggests it is important to avoid ethnocentrism. • Do you agree? Why? Why not?

  36. Sociocultural Influences Cultural factors affect a cohort, a group of individuals born during the same historical era. How would you describe YOUR cohort?

  37. Sociocultural Influences

  38. A Lifespan Profile on Influences

  39. Development in a Broad Context

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