homologous chromosome

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• Homologous chromosome — Homologous chromosomes are chromosomes in a biological cell that pair (synapse) during meiosis, or alternatively, non identical chromosomes that contain information for the same biological features and contain the same genes at the same loci but… …   Wikipedia

• Chromosome segregation — is a step in cell reproduction or division, where chromosomes pair off with their similar homologous chromosome. In mitosis, a complete copy of each one is made. In meiosis, one chromosome from each pair migrates to opposite ends of the cell and… …   Wikipedia

• Homologous recombination — Figure 1. During meiosis, homologous recombination can produce new combinations of genes as shown here between similar but not identical copies of human chromosome 1. Homologous recombination is a type of genetic recombination in which nucleotide …   Wikipedia

• Chromosome — For a non technical introduction to the topic, see Introduction to genetics. Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2)… …   Wikipedia

• chromosome — chromosomal, adj. chromosomally, adv. /kroh meuh sohm /, n. Genetics. any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing… …   Universalium

• Chromosome — A visible carrier of the genetic information. The 3 billion bp (base pairs) in the human genome are organized into 24 distinct, physically separate microscopic units called chromosomes. All genes are arranged linearly along the chromosomes. The… …   Medical dictionary

• chromosome — Synonyms and related words: Altmann theory, DNA, De Vries theory, Galtonian theory, Mendelianism, Mendelism, RNA, Verworn theory, W chromosome, Weismann theory, Weismannism, Wiesner theory, X chromosome, Y chromosome, Z chromosome, accessory… …   Moby Thesaurus

• Chromosome regions — Diagram of a duplicated and condensed (metaphase) eukaryotic chromosome. (1) Chromatid one of the two identical parts of the chromosome after S phase. (2) Centromere the point where the two chromatids touch, and where the microtubules attach. (3) …   Wikipedia

• homologous — adjective Showing a degree of correspondence or similarity. : Corresponding to a similar structure in another life form with a common evolutionary origin. :, : Lobules, homologous in structure, recur again only in the Gondwanalandic families… …   Wiktionary

• Homologous — The relationship between two chromosomes that are paired and so are homologs of each other. * * * Corresponding or alike in certain critical attributes. 1. In biology or zoology, denoting organs or parts corresponding in evolutionary origin and… …   Medical dictionary

• Chromosome duplication — Part of a chromosome in duplicate. A particular kind of mutation involving the production of one or more copies of any piece of DNA, including sometimes a gene or even an entire chromosome. A duplication is the opposite of a deletion.… …   Medical dictionary