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(A) The fetus has a complex heterozygous mutation in the BBS2 gene from the mother’s C. 534+1G>T site heterozygous mutation. (B) The father has a normal locus. (C) The mother had heterozygous variation in the C. 534+1G>T locus. (D) The fetus has a complex heterozygous mutation in the BBS2 gene from the father’s heterozygous mutation of C. 1814C>G. (E) The mother has normal loci. (F) The father had a heterozygous variation at the c.1814C>G locus.
