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transmission of a trait from mother to daughters but not to sons, attributed to attached (partially fused) X chromosomes, to cytoplasmic inheritance, or to sex limitation with abnormal segregation, for example, hematocolpos.
the acquisition or expression of traits or conditions only through the maternal line, transmitted by genes located on attached X chromosomes. The phenomenon is not known to occur in humans. Compare holandric inheritance.
Transmission of traits from mothers only to daughters.
See also: inheritance