Across
- 3. a random error in gene replication that leads to a change
- 5. the study of the evolution of behavior and the mind, using principles on natural selection
- 7. the brain's ability to change, especially during childhood, by reorganizing after damage or by building new pathways based on experience
- 11. the complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes
- 12. 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
- 14. twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms
- 19. our awareness of ourselves and our environment
- 20. the study of the relative power and limits of genetic and environmental influences on behavior
- 24. brain a condition resulting from surgery that isolates the brain's two hemispheres by cutting the fibers (mainly those of the corpus callosum) connecting them
- 25. the biochemical units of heredity that make up the chromosomes; segments of DNA capable of synthesizing a protein
- 26. portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgements
- 27. controls language expression--an area, usually in the left frontal lobe, that directs the muscle movements involved in speech
- 28. a complex molecule containing the genetic information that makes up the chromosomes
- 29. impairment of language, usually caused by left hemisphere damage
Down
- 1. area at the front of the parietal lobes that registers and processes body touch and movement sensations
- 2. controls language reception--a brain area involved in language comprehension and expression; usually in the left temporal lobe
- 4. portion of the cerebral cortex lying roughly above the ears; includes the auditory areas, each receiving information primarily from the opposite ear
- 6. twins who develop from separate fertilized eggs. They are genetically no closer than brothers and sisters, but they share a fetal environment.
- 8. callosum the large band of neural fibers connecting the two brain hemispheres and carrying messages between them
- 9. an area at the rear of the frontal lobes that controls voluntary movements
- 10. the interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language)
- 13. portion of the cerebral cortex lying at the back of the head; includes areas that receive information from the visual fields
- 15. the formation of new neurons
- 16. every nongenetic influence, from prenatal nutrition to the people and things around us
- 17. the subfield of biology that studies the molecular structure and function of genes
- 18. the principle that information is often simultaneously processed on separate conscious and unconscious tracks
- 21. the proportion of variation among individuals that we can attribute to genes.
- 22. portion of the cerebral cortex lying at the top of the head and toward the rear; receives the sensory input for touch and body position
- 23. the interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)