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Changes in the gene structure that can result in birth defects.

User John Gorter
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Answer:

There are two genetic causes of birth defects – (1) abnormalities in the number or structure of chromosomes that make up your genes and (2) defects in a single gene you carry. In addition, genetic disorders can sometimes result from spontaneous mutation that may happen to the egg or sperm – after fertilisation.

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Changes in the gene structure that can result in birth defects.-example-1
User Serey
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