Answer the following question given this paragraph: 

Linkage Map for the Human X Chromosome. This linkage map shows the locations of several genes on the X chromosome. Some of the genes code for normal proteins. Others code for abnormal proteins that lead to genetic disorders. Which pair of genes would you expect to have a lower frequency of crossing-over: the genes that code for hemophilia A and G6PD deficiency, or the genes that code for protan and Xm?.


Q: What map shows the locations of several genes on the x chromosome?

 Choices:

- The genomic map

- the component map

- The allelic map

- the linkage map

A:
the linkage map
