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12.2
| Term | Definition |
|---|---|
| pedigree | a diagram that shows the occurrence of a genetic trait in several generations of a family |
| carrier | an individual who has one copy of a recessive autosomal allele that causes disease 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 |
| polygenic | a characteristic of an organism that is determined by many genes |
| complex character | characters that are influenced strongly both by the environment and by genes |
| multiple allele | more than 2 alleles for a genetic trait |
| codominance | a condition in which both alleles for a gene are fully expressed |
| incomplete dominance | a trait in an individual is intermediate between the phenotype of the individual's 2 parents because the dominant allele is unable to express itself fully |
| sex-influenced trait | an autosomal trait that is influenced by the presence of male or female sex hormones |
| Huntington's disease | a rare hereditary disease of the brain characterized by involuntary movements of the limbs or face, decreasing mental abilities, and death |
| amniocentesis | a procedure used in fetal diagnosis in which amniotic fluid is removed woman |
| genetic counseling | the process of testing and informing potential parents about their genetic makeup 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 |
Created by:
ChambersA20
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