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Q. Double lines in pedigree analysis show

KCETKCET 2015Principles of Inheritance and Variation

Solution:

Double lines in pedigree analysis represent mating between relatives, i.e., consanguineous mating. Normal mating is shown by single line. Symbol “◊ ” represents sex unspecified. Unaffected offspring are depicted by open and clear symbols (i.e., ◻ for male and O for female).