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Problem 1: The birds and the bees (Rejected) (Dangers and Risks (Leeman)…

- - - - Experience-expectant interaction: effects of natural environment that’s experienced by all humans.
      - Experience-dependent interaction: occurs in only some people.
      - RNA: copy of gene that then travels from cell nucleus to body of cell (protein synthesis here)
    - - Alleles (2 alleles: one frm ea parent).
        same = homozygous different = heterozygous.
        
        Codominance: traits will combine but not blend e.g. blood-type AB
        
        Polygenic: involvement of many genes w/ one trait. (e.g. height, weights, intelligence, temperament)
        
        Pleiotropic: they code for many traits rather than just one
        
        PKU (phenylketonuria)
        
        Simple dominant-recessive
  - - - Haemophilia: x-linked recessive gene where blood fails to clot = blindness
    - - Huntington’s disease: gradual deterioration of nervous system
      - Down syndrome/trisomy-21: extra 21st chromosome; children are intellectually impaired, congenital heart/eyes/ear defects, reach developmental milestones at slower pace.
      - Turner's, Kleinfelters, XXY (chart)
  - - - Nonshared environmental influence (NSEs): NSE = 1.00 - r (their heritability coefficient for certain trait)
        Shared Environmental influence (SEs): SE = 1.00 - (H + NSE).
        H = variation attributable to genes.
      - Heritability coefficient: (0 to +1.00) extent to which differences among ind w/ that attribute are related to differences in genes not whether we inherited a certain trait.
- - - - Blastocysts: two cells that form a ball-like structure that contain 60-80 cells aft 4 days of conception.
      - Implantation: blastocysts burrows into uterus lining, takes 48 hours, 7 days aft conception.
      - Rh factor incompatibility: infant’s blood is Rh pos and mothers Rh neg = incompatibility means that mothers blood might produce antibodies that attack the child.
  - - - 3 LAYERS:
        Endoderm: gastrointestinal tract, trachea, bronchi, Eustachian tubes, glands, organs like pancreas/liver.
        Mesoderm: into muscles, skeleton, inner skin, circulatory/excretory systems.
        Ectoderm: most important, sensory cells and nervous system develop forming neural tube @ 4-5th week and results in brain and spinal cord.
      - Cephalocaudal: development from head to legs.
        Proximal-distal: growth occurs in central (internal organs).
      - -amniotic sac: thin membrane around embryo that contains amniotic fluid.There’s a yolk sac; it produces blood cells till the embryo can do it on its own, it’s attached to a third membrane called chorion, which becomes lining of placenta.
        -placenta: disc-like at lining of uterus, helps protect/sustain life w/ umbilical cord,separate bloodstreams of mother and child b/c it’s semipermeable.
        -umbilical cord: Joins embryo and placenta, contains vessels that carry blood back and forth b/w infant and placenta. It’s the fourth membrane.
  - - - Report movements @ 5 month
      - Eyes opening and closing @ 6 months
      - Age of viability: 22-26 weeks; phys systems are advanced w/ weight around 7-8lb, 19-21 inches big @ week 25-38, likely to survive if born prematurely
      - Respiratory system evolve until the 9 months
      - sex developed @ 4-6 months