Anderson AP Bio
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| 494724422 | aneuploidy | A chromosomal aberration in which one or more chromosomes are present in extra copies or are deficient in number. | |
| 494724423 | Barr body | A dense object lying along the inside of the nuclear envelope in cells of female mammals, representing a highly condensed, inactivated X chromosome. | |
| 494724424 | Chromosome Theory of Inheritance | A basic principle in biology stating that genes are located on chromosomes and that the behavior of chromosomes during meiosis accounts for inheritance patterns. | |
| 494724425 | Crossing Over | The reciprocal exchange of genetic material between non-sister chromatids during prophase I of meiosis. | |
| 494724426 | Cytogenetic Map | A chart of a chromosome that locates genes with respect to chromosomal features distinguishable in a microscope. | |
| 494724427 | Dendrite | One of usually numerous, short, highly branched extensions of a neuron that receive signals from other neurons. | |
| 494724428 | Down Syndrome | A human genetic disease caused by the presence of an extra chromosome 21; characterized by mental retardation and heart and respiratory defects. | |
| 494724429 | Duchenne muscular dystrophy | A human genetic disease caused by a sex-linked recessive allele; characterized by progressive weakening and a loss of muscle tissue. | |
| 494724430 | duplication | An aberration in chromosome structure due to fusion with a fragment from a homologous chromosome, such that a portion of a chromosome is duplicated. | |
| 494724431 | genetic map | An ordered list of genetic loci (genes or other genetic markers) along a chromosome. | |
| 494724432 | genetic recombination | General term for the production of offspring with combinations of traits that differ from those found in either parent. | |
| 494724433 | genomic imprinting | A phenomenon in which expression of an allele in offspring depends on whether the allele is inherited from the male or female parent. | |
| 494724434 | hemophilia | A human genetic disease caused by a sex-linked recessive allele resulting in the absence of one or more blood-clotting proteins; characterized by excessive bleeding following injury. | |
| 494724435 | inversion | An aberration in chromosome structure resulting from reattachment of a chromosomal fragment in a reverse orientation to the chromosome from which it originated. | |
| 494724436 | linkage map | A genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes. | |
| 494724437 | linked genes | Genes located close enough together on a chromosome that they tend to be inherited together. | |
| 494724438 | map unit | A unit of measurement of the distance between genes. One map unit is equivalent to a 1% recombination frequency. | |
| 494724439 | monosomic | Referring to a cell that has only one copy of a particular chromosome instead of the normal two. | |
| 494724440 | nondisjunction | An error in meiosis or mitosis in which members of a pair of homologous chromosomes or a pair of sister chromatids fail to separate properly from each other. | |
| 494724441 | parental type | An offspring with a phenotype that matches one of the parental phenotypes; also refers to the phenotype itself. | |
| 494724442 | polyploidy | A chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division. | |
| 494724443 | sex-linked gene | A gene Located on A sex chromosome (usually the X chromosome), resulting in A distinctive pattern of inheritance. | |
| 494724444 | translocation | An aberration in chromosome structure resulting from attachment of a chromosomal fragment to a nonhomologous chromosome. (2) During protein synthesis, the third stage in the elongation cycle when the RNA carrying the growing polypeptide moves from the A site to the P site on the ribosome. (3) The transport of organic nutrients in the phloem of vascular plants. | |
| 494724445 | trisomic | Referring to a diploid cell that has three copies of a particular chromosome instead of the normal two. | |
| 494724446 | wild type | An individual with the phenotype most commonly observed in natural populations; also refers to the phenotype itself. |
