What are some possible genetic explanations for chromosome

Solution-Opinion of the topic under consideration
April 15, 2020
Solution-Gene for cystic fibrosis, Cystic fibrosis is an
April 15, 2020

What are some possible genetic explanations for chromosome

The gene (cv) is recessive and is known to be 13.7 Map units from the beginning of the chromosome. The recessive gene (f) is 51.7 map units from the beginning of the chromosome. After doing all of the calculations i found my gene order to be we-cv-f. Gene (we) is the unknown gene which i mapped to be 17.2 map units from gene(cv). This puts the unknown gene off of the chromosome by 3.5 map units.

Why is this? What are some possible genetic explanations for this?