Genetics. a combination of closely linked DNA sequences on one chromosome that are often inherited together: By comparing haplotypes of a mother and father with those of a fetus, scientists can study how new genetic changes arise.

1965–70;haplo- + type

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World English Dictionary
haplotype (ˈhæpləʊˌtaɪp)
a set of alleles inherited by an individual from a single parent

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Medical Dictionary

haplotype hap·lo·type (hāp'lə-tīp')

  1. The set of alleles that determine different antigens but are closely linked on one chromosome and inherited as a unit, providing a distinctive genetic pattern used in histocompatibility testing.

  2. The antigenic phenotype determined by closely linked genes inherited as a unit from one parent.

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