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PSY 335-Ch 3

QuestionAnswer
Polygenetic inheritance inheritance in which a combination of multiple gene paris is responsible for the product not a particular trait
X-linked genes genes that are considered recessive an located only on the X chromosome
Behavioral genetics study of the effects of heredity on behavior
Down syndrome disorder produced by the presence of an extra chromosome on the 21st pair (mongolism)
Fragile X syndrome disorder proceed by injury to a gene on the X chromosome, causing mild to moderate mental retardation
Sickle-cell anemia blood disorder that gets name from shape of the red blood cells in those that have it
Tay-Sachs disease disorder that produces blindness and muscle degenerate prior to death; no treatment
Klinefelter's syndrome A disorder resulting from the presence of an extra X chromosome the produces underdeveloped genitals, extreme height, and enlarged breasts
Chorionic villus sampling test used to find genetic defects that involves taking sample of hairlike material that surrounds the embryo
Amniocentesis Process of identifying genetic defects by examining a small sample of fetal cells drawn by a needle inserted into the amniotic fluid surrounding the unborn fetus
Temperament patterns of arousal and emotionality that represent consistent and enduring characteristics in an individual
Multifactoral transmission (environment + genes) determination of traits by a combination of both genetic and environmental factors in which a genotype provides a range within which a phenotype may be expressed.
teratogen factor that produces a birth defect
Germinal stage first and shortest stage of the prenatal period,which takes place during the first 2 weeks following conception
Embryonic stage period from 2 to 8 weeks following fertilization during which significant growth occurs in the major organs and body systems
Fetal stage stage that begins at about 8 weeks after conception and continues until birth
Fetus a developing child from 8 weeks after conception until birth
Created by: bio
 

 



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