Heredity

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Heredity

• Our Genetic Background

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Heredity

• Definition Transmission of characteristics from
  parents to offspring
• Traits we inherit shape our behavior
• Physical and some _______________

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Genes Basic building blocks of heredity

• Pairs of genes
• One from each_____________
• Some traits come from one pair (blood type),
  Others come from groups (intelligence)
  environment
• Found in_______________

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Chromosomes Threadlike structures composed of
deoxyribonucleic acid

• DNA form
• Normal cells have 46, in 23 pairs
• One from ________ and one from _______
• Contains instructions for development of traits
• 23rd
• 21st Extra one here

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Nature vs. Nurture

• Nature What people_________. The biological
  framework that prepares a person to develop in
  certain ways
• Inherited characteristics determine the people we
  are
• Nurture _____________ factors. What a person is
  exposed to in life.
• Experiences determine who we are
• Both have an influence

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Kinship Studies

• Degree to which people are related, based on the
  genes they have in common
• Identical twins 100
• Parent/Child 50
• Siblings 50
• Uncle/Niece 25

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Twin studies

• Differences amongst twins must be due to
  _________________
• Fraternal twins differences may be _______ or
  ____________
• If identical twins are more similar on a trait,
  that trait must be influenced by _________
• Personality, Disorders

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Adoption Studies

• Look for more similarities between children and
  both sets of parents
• If they act like biological parents _________
• Tend to find more similarities between
  ___________ parent and the child

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Twins reared apart

• Most revealing
• Less likely to share similarities than if raised
  in same home Why?
• If similarities exist, Probably ___________
• Have found many cases of shared mannerisms,
  styles, personality traits, etc