Update README.md

studies/biparental_mapping_eam7/README.md

@@ -11,6 +11,7 @@ The F2 generation of a cross between BW(*eam7*) and BW(*Ppd-H1*) was used to ide
 	C --> | biparental_mapping | D[- CAPS marker results
 	- reduced eam7 introgression area
 	- target genes for eam7]
+	B --> D
 ```
 
 **Publication:**