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Transcript
The Developing Person
Through the Life Span
Eighth Edition
Kathleen Stassen Berger
Part I
Chapter Three
Heredity and Environment
The Genetic Code
From One Cell to Many
Genotype and Phenotype
Chromosomal and Genetic
Problems
The Genetic Code
• What Genes Are
• The Beginnings of Life
– Matching Genes
– Male or Female?
• THINKING CRITICALLY: Too Many Boys?
– New Cells, New Functions
– Stem Cells
The Genetic Code
• Twins
– Monozygotic Twins
– Dizygotic Twins
• Assisted Reproduction
• THINKING CRITICALLY: Two Babies
for the Price of One?
From One Cell to Many
• Epigenetics
• Gene-Gene Interactions
– Additive Heredity
– Dominant-Recessive Heredity
• More Complications
Genotype and Phenotype
• Current Consensus
– Alcoholism
– Nearsightedness
• Practical Applications
Chromosomal and Genetic
Problems
• Not Exactly 46
– Down Syndrome
– Problems of the 23rd Pair
• Gene Disorders
– Recessive Disorders
Chromosomal and Genetic
Problems
• Genetic Counseling and Testing
• A VIEW FROM SCIENCE: Genetic
Testing for Psychological Disorders