Small genetic differences make one person different from a nother. Now medical resea rchers have a new map to help them find these . ... (77) . . .. Th is possible beca use some time ago more than two hundred scienties from sixnation .... (78) .. . . the Hap Map. The name comes from the word haplotype. A haplotype is a g roup of d ifferences that a re .... (79) .... to come close together in a block. These blocks .... (80) .. .. to pass from parent to child . The Hap Map scientists hope to identify up to six million DNA differences .... (8 1) ..... they finish . The scientists say the findings may lead to . ... (82) .... genes that ca u se common diseases like diabetes and heart disease . .... (83) .... diseases to genes could lead to new treatments . .... (84) .... people will be able to know if they have an increased risk of a disease beca useof their genes.​