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| Genes located on sex chromosomes. |
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| Genes located on the same chromosome that are inherited together in genetic crosses because the chromosome is passed along as a unit. |
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| The general term for the production of offspring with new combinations of traits inherited from the two parents. |
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| An ordered list of genetic loci (genes or other genetic markers) along a chromosome. |
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| A genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes. |
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| A measurement of the distance between genes; one ma unit is equivalent to a 1% recombination frequency. |
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| A dense object lying along the inside of the nuclear envelope in female mammalian cells, representing an inactivated X chromosome. |
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| An accident of meiosis or mitosis, in which the members of fa pair of homologous chromosomes or sister chromatids fail to move apart properly. |
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| A chromosomal aberration in which certain chromosomes are present in extra copies or are deficient in number. |
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| A chromosomal alteration in which the organism possesses more than two complete chromosome sets. |
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| A hereditary mental disorder, partially explained by genomic imprinting and the addition of nucleotides to a triplet repeat near the end of an X chromosome. |
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| Viruses that infect bacteria; also called phages. |
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| An aberration in chromosome structure resulting from an error in meiosis or mutagens; otherwise resulting from fusion with a fragment from a homologous chromosome. |
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| An aberration in chromosome structure resulting from a error in meiosis or from mutagens; specifically, reattachment of a chromosomal fragment to the chromosome from which the fragment originated, but in a reverse orientation. |
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| A deficiency in a chromosome resulting from the loss of a fragment through breakage; a mutational loss of one or more nucleotide pairs from a gene. |
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| An aberration in chromosome structure resulting from an error in meiosis or from mutagens; specifically, attachment of a chromosomal fragment to a nonhomologous chromosome. |
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| The conversion of a normal animal cell to a cancerous cell; a change in genotype and phenotype due to the assimilation of external DNA by a cell. |
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| Semi-conservative DNA Model |
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Definition
| Type of DNA replication in which the replicated double helix consists of one old strand, derived from the old molecule, and one newly made strand. |
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Definition
| Sites where the replication of a DNA molecule begin. |
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Definition
| A Y-shaped region on a replicating DNA molecule where new strands are growing. |
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| An enzyme that catalyzes the elongatoin of new DNA at a replication fork by the addition of nucleotides to the existing chain. |
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Definition
| A linking enzyme esssential for DNA replication; catalyzes the covalent bonding of the 3' end of a new DNA fragment to the 5' end of a growing chain. |
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Definition
| The nex continuous complementary DNA strand synthesized along the template strand in the mandatory 5' -> 3' direction. |
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Definition
| A discontinously synthesized DNA strand that elongates in a direction away from the replication fork. |
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Definition
| An enzyme that joins RNA nucleotides to make the primer. |
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Definition
| An already existing RNA chain bound to template DNA to which DNA nucleotides are added during DNA synthesis. |
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Definition
| An enzyme that untwists the double helix of DNA at the replication forks. |
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| Separate sections of formed parts of the lagging strand. |
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Definition
| An enzyme that catalyzes the lengthening of telomeres. Includes a molecule of RNA that serves as a template for new telomere segments. |
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| The protective structure at each end of a eukaryotic chromosome. Specifically, the tandemly repetitive DNA at the end of the chromosome's DNA molecule. |
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