Compare all the organisms. what trend do you see? the proportions of dna bases vary greatly among organisms. the proportions of dna bases are similar in closely related organisms, but different in organisms that are not closely related. the proportions of dna bases are similar among all organisms.

The proportions of DNA bases are similar among all organisms.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.