Other Free Encyclopedias » Medicine Encyclopedia » Genetics in Medicine - Part 1 » Chromosomal Aberrations - Advances In Chromosomal Analysis, Chromosomal Aberrations, Aneuploidy, Disorders Associated With Aneuploidy, Abnormalities Of Chromosomal Structure - Unbalanced Chromosome Rearrangements

Chromosomal Aberrations - Duplications

chromosome changes effect chromosome insertions

Duplications also result from the reuniting of broken pieces of homologous chromosomes. In some cases the chromosome pieces rejoin in such a way that there is a doubling, or redundancy, of a portion of the chromosome. This changes the number of genes present and may result in a problem with health, development, or growth.

Large insertions and deletions prevent the production of useful proteins. The effect of smaller insertions or deletions depends upon how many bases Schematic representation of four types of chromosomal aberrations. are involved. Sometimes an entire gene can be inserted (in duplications) or deleted. The effect depends upon where in the genome the changes occur and how many base pairs are involved.

Chromosomal Aberrations - Inversions [next] [back] Chromosomal Aberrations - Deletions

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