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Definition. Duplication, as related to genomics, refers to a type of mutation in which one or more copies of a DNA segment (which can be as small as a few bases or as large as a major chromosomal region) is produced. Duplications occur in all organisms.
Duplicate genes are genes that have identical or nearly identical DNA sequences and are found in the same or different regions of a chromosome or in different chromosomes within a genome. These genes are formed as a result of DNA replication or mutation events that create new copies of a gene.
Duplication creates genetic redundancy and if one copy of a gene experiences a mutation that affects its original function, the second copy can serve as a ‘spare part’ and continue to function correctly.
Mitosis, a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells. Strictly applied, the term is used to describe the duplication and distribution of chromosomes, the structures that carry the genetic information.
Gene duplication refers to a mutation during which a sequence of genetic information is duplicated. These mutations contrast to deletions, translation, and transversion...
Definition. Duplication refers to a genetic event where a segment of DNA is copied, resulting in two identical copies of that segment within the genome. This can lead to variations in gene expression and can play a crucial role in evolution by introducing genetic diversity.
Duplications may affect phenotype by altering gene dosage. For example, the amount of protein synthesized is often proportional to the number of gene copies present, so extra genes can...
Duplication is a type of genetic mutation where a segment of DNA is copied, resulting in the presence of two or more identical segments within the genome. This process can lead to an increase in gene dosage, potentially affecting the expression and function of genes.
Duplication is a genetic mutation where a portion of the DNA sequence is copied, resulting in multiple copies of that region within the chromosome. This process can lead to changes in gene dosage, potentially causing overexpression of certain genes, which can significantly influence the development of inherited disorders.
Duplication happens during meiosis when two misaligned homologous chromosomes have unequal crossing-over. This means that one chromosome will not have a certain segment, while the other chromosome will have two pieces of the segment.