I have been surprised to read in Genetic Variation in an Individual Human Exome that most of indels in coding regions are homozygous:
The HuRef genome contains a total of 739 coding indels, which consists of 281 heterozygous indels and 458 homozygous indels
My expectation was that as it is very unlikely to have same indel at same loci on both chromosomes, heterezygous indels were more common.
Does it mean that those hom. indels are inherited from very remote ascendants? Could you please clarify this point?