A typical crossing experiment involving three genes in fruit flies might show the percentage of recombinant, or crossover offspring, between the genes taken in pairs to be the following:

frequency between A and G = 5%
frequency between G and M = 21%
frequency between A and M = 16%

What is the distance between A and G?

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

a compound light microscope is used to magnify objects in steps.  

hope it