psych 3c

Card Set Information

psych 3c
2011-10-23 13:04:47

Show Answers:

  1. Behavior genetics
    the study of the relative power and limits of genetic and environmental influences.
  2. Chromosomes
    threadlike structures made of DNA molecules that contain the genes.
  3. DNA
    a complex molecule containing the genetic information that makes up the chromosomes.
  4. Evolutionary psychology
    the study of the evolution of behavior and the mind, using principles of natural selection.
  5. Fraternal twins
    twins who develop from separate fertilized eggs. They are genetically no closer than brothers and sisters, but they share a fetal environment.
  6. Genes
    the biochemical units of heredity that make up the chromosomes; segments of DNA capable of synthesizing a protein.
  7. Genome
    the complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes.
  8. Heritability
    the proportion of variation among individuals that we can attribute to genes. The heritability of a trait may vary, depending of the range of populations and environments studied.
  9. Identical twins
    twins who develop from a single fertilized egg that splits into two, creating two genetically identical organisms.
  10. Mutation
    a random error in gene replication that leads to a change.
  11. Natural selection
    the principle that, among the range of inherited trait variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations.