What is the difference between a linkage map and a physical map?
A)For a linkage map, markers are spaced by recombination frequency, whereas for a physical map they are spaced by numbers of base pairs (bp).
B)For a physical map, the ATCG order and sequence must be achieved, but not for the linkage map.
C)For a linkage map, it is shown how each gene is linked to every other gene.
D)For a physical map, the distances must be calculable in units such as nanometers.
E)There is no difference between the two except in the type of pictorial representation.

Question

Quizplus · Accepted Answer

The main difference between a linkage map and a physical map is that for a linkage map, the markers are spaced by recombination frequency, whereas for a physical map they are spaced by numbers of base pairs (bp) along the chromosome. In other words, linkage maps are based on genetic distances, while physical maps are based on physical distances. Linkage maps show the relative positions and order of genes on a chromosome, whereas physical maps show the actual physical distances between genetic markers.

What Is the Difference Between a Linkage Map and a Physical