Question

The table in figure 12-3 shows the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be around ______ .

A. 28.8%
B. 19.9%
C. 21.5%
D. 13.4%

Answer 1

The correct answer to this question is letter "B. 19.9%. "

There exists a question on a separate site that shows that table.
The table in Figure 12–3 shows the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff’s rule, the percentages of thymine bases in chicken DNA should be around 19.9%

Answer 2

Step-by-step explanation:

The table for this question is attached as image

Solution -

As per Chargaff's rule the amount of base molecule of DNA must be equal to their complementary bases.

For instance the amount of adenine must be equal to amount of thymine and amount of guanine must be equal to amount of cytosine and the amount of these two base is never equal to each other.

Thus, in the table if % of cytosine in chicken’s DNA is 21.5 % then the guanine % would be also 21.5%