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Student notes ch 8 - Naturevs.Nurture...

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Nature vs. Nurture Prenatal Development & Infancy Genetics and Development Genetics - science of inherited traits DNA - molecule containing organism’s genetic material Gene - section of DNA having same arrangement of chemical elements dominant vs. recessive genes… Eye Color and Genetics Ovum -  egg Fertilization - uniting of egg and sperm  Conception -moment pregnancy begins Zygote - cell resulting from egg-cell union Monozygotic Twins Infants will be same sex, have identical features and possess same set of  46 chromosomes Dizygotic Twins A woman’s body is only supposed to release an egg once each monthly  cycle. Sometimes, something goes wrong… Periods of Pregnancy Germinal period - first two weeks after fertilization, during which the zygote  moves down to the uterus  Infancy & Childhood Development
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Infant Reflexes
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