Chapter 3 PSY 278 Dr. Lewis

4. the amount of variability in a population on some trait dimension that is attributable to genetic differences among those individuals
6. the genetic endowment that an individual inherits
8. a genetic disease in which the child is unable to metabolize phenylalanine
11. an instance in which two different but equally powerful genes produce a phenotype in which both genes are expressed
12. movement of fertilization, when a sperm penetrates an ovum, forming a zygote
13. a change in the structure or arrangement of one or more genes that produces a new phenotype
15. a deficiency in the blood's ability to clot
16. the process in which a cell duplicates its chromosomes and then divides into two genetically identical daughter cells
17. one of the possible variants of a particular gene

1. a serious form of mental illness characterized by disturbances in logical thinking, emotional expression, an interpersonal behavior
2. a single cell formed at conception from the union of a sperm and an ovum
3. a chromosomal portrait created by staining chromosomes, photographing them under a high-power microscope, and arranging them into a predetermined pattern
5. building blocks of personality such as activity level, sociability, and emotionality
7. method of examining physical organs by scanning them with sound waves
8. the way in which a person's genotype is expressed in observable or measurable characteristics
9. a method of extracting amniotic fluid from a preganant woman so that fetal body cells within the fluid can be tested for chromosomal abnormalities and other genetic defects
10. the double helix molecule whose chemical code makes up chromosomes and serves as our genetic endowment
13. the process in which a germ cell deivides, producting sperm or ova, each containing half of the parent cell's original complement of chromosomes
14. individuals who possess a recessive gene associated with a disease and who, although they do not have the disease, can transmit the gene for it to offspring