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A chromosomal abnormality, chromosomal anomaly, chromosomal aberration, chromosomal mutation, or chromosomal disorder is a missing, extra, or irregular portion of chromosomal DNA.
24 kwi 2023 · A chromosomal abnormality, or chromosomal aberration, is a disorder characterized by a morphological or numerical alteration in single or multiple chromosomes, affecting autosomes, sex chromosomes, or both.
20 sie 2021 · Genetic disorders occur when a mutation affects your genes or chromosomes. Some disorders cause symptoms at birth, while others develop over time. Genetic testing can help you learn more about the likelihood of experiencing a genetic disorder.
Chromosomes are structures within cells that contain a person's genes. Genes are segments of deoxyribonucleic acid (DNA) and contain the code for a specific protein that functions in one or more types of cells in the body (see Genes and Chromosomes for a discussion about genetics).
8 lip 2009 · Chromosomal abnormalities can occur as an accident when the egg or the sperm is formed or during the early developmental stages of the fetus. The age of the mother and certain environmental factors may play a role in the occurrence of genetic errors.
Chromosomal abnormalities cause various disorders. Abnormalities that affect autosomes (the 22 paired chromosomes that are alike in males and females) are more common than those that affect sex chromosomes (X and Y).
