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The following table is a sample of the data Erwin Chargaff published in 1952.

Erwin Chargaff's data

Which of the following observations can be supported by the data in the table? Select all correct answers.

If you select an incorrect answer, you will be deducted 0.5 points for each incorrect answer.

Select one or more:
a. The proportions of adenine + thymine and guanine + cytosine are the same in all organisms.
b. The total length of DNA molecules in all organisms is about the same.
c. In each animal, the percentage of adenine is the same as the percentage of thymine in the DNA.
d. Larger organisms have greater amounts of each nitrogenous base than smaller organims have.

Respuesta :

smilodon
The correct answer is C

Erwin Chargaff's research found that there are two pairs of nucleotides in the DNA molecule, adenine-thymine, and guanine-cytosine. 
Those two pairs of nucleotides are complementary and since they pair up in the DNA molecule, the amount of one nucleotide in the pair must be equal to the amount of the other nucleotide of the pair. 
He also found that different species have different proportions of nucleotides, which proved that DNA is the carrier of genetic information, not the proteins.

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