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20 Cards in this Set
- Front
- Back
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amniocentesis
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Procedure for drawing and examining fetal cells sloughed off into amniotic fluid to determine the presence of various disorders
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Autism
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Developmental disorder characterized by extreme aloness and failure to relate to others, communication problems, intolerance of change, and ritualistic behavior
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Chromosomes
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Rod-shaped structures composed of genes that are found within the nuclei of a cell
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Dominant Trait
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A trait that is expressed
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Down syndrome
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Chromosomal abnormality characterized by mental retardation and caused by an extra chromosome in the 21st pair
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Gene
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Basic unit or building block of heredity. Genes are composed of DNA
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Genetic Counseling
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Advice concerning the probabalities that a couples children show genetic abnormalities
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Genetics
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Branch of biology that studies heredity
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Genotype
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Genetic form or constitution of a person as determined by heredity
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Heredity
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Transmission of traits and characeteristics from parent to child by means of genes
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Klinefelter Syndrome
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A chromosomal disorder found among males that is caused by an extra X sex chromosome and that is characterized by infertility and mild mental retardation
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Multifactorial problems
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Problems that stem from the interaction of heredity and enviormental factors
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Mutation
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A sudden variation in a heritable characteristic as by an accident that affects the composition of genes
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Phenotype
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Actual form or constitution of a person as determined by heredity and enviormental factors
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Reaction Range
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Variability in the expression of inherited traits as they are influenced by enviormental factors
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Recessive trait
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Trait that is not expressed when the gene or genes involved have been paired with dominant genes. They are transmitted to future generations and expressed if paired with other recessive traits
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Sex-Linked genetic abnormalities
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Abnormalities that are transmitted from generation to generation carried by a sex chromosome usually an X sex chromosome
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Sickle Cell Anemia
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Genetic disorder that decreases the bloods capacity to carry oxygen
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Tay-Sachs disease
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A fatal genetic neurological disease
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Turner Syndrome
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Chromosomal disorder found among females that is caused by having a single X sex chromosome and that is characterized by infertility
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