chr start stop reference nuc variant nuc depth genic status zygosity variant ID 2 68837774 68837775 T A 10 GENIC homozygous 120180730 2 68837775 68837776 A C 10 GENIC homozygous 120180731 2 68894346 68894347 C G 21 GENIC homozygous 109812276