Question: do aunts and nieces share dna?
Answer: Parent-child pairs share between 83.94% and 84.20% of SNPs (50% of DNA in common) ... Uncle/aunt-niece/nephew pairs share between 78.48% and 79.57% of SNPs (25% of DNA in common) Grandparent-grandchild pairs share between 77.96% and 80.59% of SNPs (25% of DNA in common)