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16 Cards in this Set
- Front
- Back
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Autosome |
a chromosome not involved in sex determination |
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Linked Genes |
genes that are located on the same chromosome |
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Sex-Linked Trait |
trait that is determined by genes located on the sex chromosomes |
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Recessive Lethal |
a trait that, when both recessive alleles are present, results in death or severe malformation of the offspring. Usually, recessive traits occur more frequently in males |
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Barr Body |
a small, dark spot of chromatin located in the nucleus of a female mammalian cell |
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Linkage Group |
a group of linked genes on a chromosome |
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Locus (Plural Loci) |
a specific location along a chromosome where a particular gene is found |
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Marker Gene |
a gene that confers an easily identifiable phenotype and is used to trace the inheritance of other genes that are difficult to identify; it must be located on the same chromosome, and ideally, at a very small distance from the gene being followed |
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Continuity of Life |
a succession of offspring that share structural similarities with those of their parents |
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Bacteriophage |
a virus that infects bacteria |
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Isotope |
one of two or more atoms of the same element containing the same number of protons but a different number of neutrons |
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Radioisotope |
an unstable isotope that decays spontaneously by emitting radiation |
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Nucleotide |
a molecule having a five-carbon sugar with a nitrogenous base attached to its 1' carbon and a phosphate group attached to its 5' carbon |
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Deoxyribose Sugar |
a sugar molecule containing five carbons that has lost the -OH (hydroxyl group) on its 2' position |
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Nitrogenous Base |
an alkaline cyclic molecule containing nitrogen |
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Phosphate Group |
a group of four oxygen molecules surrounding a central phosphorus atom found in the backbone of DNA |
