chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 7540919 7540920 C T 9 GENIC homozygous 45413671 20 7540981 7540982 T C 8 GENIC homozygous 45413672 20 7542530 7542531 A G 22 GENIC homozygous 45413673 20 7543414 7543415 G A 21 GENIC homozygous 45413678 20 7543477 7543478 G A 13 GENIC possibly homozygous 45413679