> a haploid genome (gamete) cannot fully represent the genome of a diploid human Correct; my broader point was that when most people refer to a "human genome"

> a haploid genome (gamete) cannot fully represent the genome of a diploid human Correct; my broader point was that when most people refer to a "human genome" it is ambiguous whether they mean diploid or haploid unless specified. Metrics like "3 billion base pairs" etc. actually describe the haploid human genome. > If you're looking for genetic disorders, these will often be the result of recessive traits, right? So having only half of the chromosome sets is not indicative. Often, but not always; there are myriad autosomal dominant disorders, as well as sex-linked disorders which require only a single mutant allele on X > If OP's joke is about the privacy implications of sperm donation, then saliva seems more risky. Here I think both with STR and SNP profiling you are equally at risk (i.e., saliva is not more risky)