What are haplotypes?

There are many definitions for haplotype, see here for more: https://en.wikipedia.org/wiki/Haplotype. For the purposes of this PDF, a haplotype is a group of single-nucleotide polymorphisms (SNPs) on one chromosome that are statistically shown to be inherited together and are more powerful in providing information about the functionality of an enzyme as compared to looking at a single SNP. Another type of haplotype combines SNPs on different genes and potentially different chromosomes that are inherited more through random chance, but their gene to gene interactions reinforce (for better or worse) a specific outcome.