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8 Facts About Genetic Disorders

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A genetic disorder is a genetic problem caused by one or more abnormalities in the genome, especially a condition that is present from birth.

Genetic Disorders-I by PEDIATRIC BOARD A LAST MINUTE REVIEW

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Most genetic disorders are quite rare and affect one person in every several thousands or millions.

Genetics Part 5: Human Genetic Disorders by Craig Savage

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Genetic disorders may be hereditary, passed down from the parents' genes.

Heredity is the passing on of traits from parents to their offspring, either through asexual reproduction or sexual reproduction; the offspring cells or organisms acquire the genetic information of their parents.

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In other genetic disorders, defects may be caused by new mutations or changes to the DNA.

Deoxyribonucleic acid is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.

In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.

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In such cases, the defect will only be passed down if it occurs in the germ line.

In biology and genetics, the germline in a multicellular organism is the population of its bodily cells that are so differentiated or segregated that in the usual processes of reproduction they may pass on their genetic material to the progeny.

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The same disease, such as some forms of cancer, may be caused by an inherited genetic condition in some people, by new mutations in other people, and mainly by environmental causes in other people.

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.

A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism.

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Whether, when and to what extent a person with the genetic defect or abnormality will actually suffer from the disease is almost always affected by the environmental factors and events in the person's development.

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Some types of recessive gene disorders confer an advantage in certain environments when only one copy of the gene is present.

Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus.

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