GATE (Graduate Aptitude Test in Engineering) Psychology Intelligence-Role of Heredity and Environment Study Material (Page 2 of 3)

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Hereditary & Environment (Nature or Nurture Issue) : Nature vs. Nature Controversy

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Nature vs. Nature Controversy

Despite its nomenclature, the nature-nurture controversy in its current state is less dichotomous than commonly believed. In other words, the term nature-nurture controversy suggests a polarization of nature and nurture. Continuity and interaction, however, more aptly describe the central processes involved i…

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Hereditary & Environment (Nature or Nurture Issue) : Fetal Development

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Fetal Development

Fertilization can occur inside the body, which is known as in-vivo fertilization.

Fertilization can occur outside the body, which is known as in-vitro fertilization.

Day One

  • Development begins on the day of fertilization.

2 Weeks

  • By the 25th day, the heart begins to beat.
  • Human embryo is about one-hundredth inch
  • Implantation began the first week and continues.

4 Weeks

  • Embryo is about one-sixth of an inch long.
  • By the end of the first month, the embryo has a head and a trunk.
  • Structures that will become arms and legs, called limb buds, begin to appear.
  • Heart in a tubular f…

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