Lecture 3-17-08 (CH 9) - Chapter 9 Lecture Development The...

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Chapter 9 Lecture – Development The branch of psychology that studies the patterns of growth and change occurring throughout life Prenatal Development: Basics of Genetics Cells Basic unit of body. At conception we are one cell Chromosomes Rod-shaped structures that contain the basic hereditary information Genes Smaller units through which genetic information is transmitted Special Production Units Ovaries – produce ovum (egg) Testicles – produce sperm Cells of ovum and sperm each have 23 chromosomes – not 46 Chromosome #23 in each is “sex chromosome” In ovum - #23 is ‘X’ chromosome In sperm - #23 are both ‘X’ and ‘Y’ chromosomes The Earliest Development Germinal period First 2 weeks – zygote Embryonic period 2 to 8 weeks – embryo Embryo has beginnings of a heart and brain Two tiny gonads Two tiny duct systems Fetal Period 8 weeks until birth Age of viability
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This note was uploaded on 04/29/2008 for the course PSYC 1000 taught by Professor Handron during the Spring '08 term at East Carolina University .

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Lecture 3-17-08 (CH 9) - Chapter 9 Lecture Development The...

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