deletion

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deletion (in genetics)
1. A point mutation involving the removal of one or more base pairs in the DNA sequence.

2. A frequently lethal chromosome mutation that arises from an inequality in crossing over during meiosis such that one of the chromatids loses more genetic information than it receives.

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deletion The loss of a chromosomal segment from a chromosome set. The size of the deletion may vary from a single nucleotide to sections containing several genes. If the deletion is from the end of a chromosome, it is called ‘terminal’; if it is from elsewhere, it is termed ‘intercalary’.

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deletion The loss of a chromosomal segment from a chromosome set. The size of the deletion may vary from a single nucleotide to sections containing several genes. If the deletion is from the end of a chromosome, it is called ‘terminal’; if it is from elsewhere, it is termed ‘intercalary’.

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deletion The removal of one or more nucleotides from a DNA sequence.