BioScience Dictionary

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Found Chromosomal mutation 4 times.

Displaying results 1 to 10.

1. Balanced translocation
A number of the chromosomal mutations called translocations, where a segment of DNA abnormally becomes attached to the wrong chromosome , which results in two nonhomologous chromosome s being able to cross over , something which normally can occur only between homologous chromosomes.

2. Chromosomal mutation
Can refer to any of a number of DNA mutation s which results in a change in the protein encoded by the mutated gene , such as point mutation s, insertion or deletion mutation s ( frameshift mutation s), or nonsense mutation s. More often this refers to mutations involving chromosome s, such as the inversion of part of one chromosome such that the inverted part no longer matches with its homologous pair , a translocation of one part of a chromosome to a different chromosome, deletions of parts of chromosomes, or accidents which happen during the division of the nucleus like the unequal portioning of chromosomes between the daughter cells.

3. Fragile sites
Places on chromosome s that tend to break more often than other places. These places also tend to be where chromosomal translocation s (a type of chromosomal mutation) occur.

4. Inversion
A type of chromosomal mutation where the nucleotide sequences within a segment of DNA are in reverse order than normal, as if that piece of DNA had been removed, turned over, and put back.