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Terms 12.2
Term | Definition |
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amniocentesis | a procedure used in fetal diagnosis in which amniotic fluid is removed from the uterus of the pregnant woman |
complex character | a character such as skin color that is influenced strongly by both genes and the environment |
codominance | a condition in which both alleles for a gene are fully expressed |
chorionic villi sampling | a procedure in which the chorionic villi are analyzed to diagnose fetal genotypes |
carrier | in genetics, an individual who has one copy of a recessive autosomal allele that cause diseases in the homozygous condition |
genetic disorder | an inherited disease or disorder that is caused by a mutation in a gene or by a chromosomal defect |
genetic counseling | the process of testing and informing potential parents about their genetic make p and the likelihood that they will have offspring with genetic defects or hereditary diseases |
gene therapy | a technique that places a gene into a cell to correct a hereditary disease or to improve the genome |
Huntington's disease | a rare hereditary disease of the brain characterized by involuntary movement of the limbs or face, decreasing mental abilities, and eventually death |
incomplete dominance | a condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents because the dominant allele is unable to express itself fully |
multiple allele | more than two alleles for a genetic trait |
pedigree | a diagram that shows the occurrence of a genetic trait in several generations of a family |
polygenic | describes a characteristic that is influenced by many genes |
sex influenced traits | an autosomal trait that is influenced by the presence of male or female sex hormones |