Chargaff's Rule

Front

What is Chargaff's Rule?

Back

Chargaff's Rule states that in a DNA molecule, the amount of adenine (A) is equal to the amount of thymine (T), and the amount of cytosine (C) is equal to the amount of guanine (G).

Front

What is the ratio of Adenine to Thymine in DNA?

Back

The ratio of Adenine to Thymine in DNA is 1:1.

Front

What is the ratio of Cytosine to Guanine in DNA?

Back

The ratio of Cytosine to Guanine in DNA is also 1:1.

Front

If 32% of a DNA molecule is Thymine, what percentage is Adenine?

Back

32% of the DNA molecule is Adenine.

Front

If a DNA molecule has 29% Guanine, what percentage of Thymine does it have?

Back

21% Thymine.

Front

If a DNA molecule has 22.8% Guanine, what percentage of Thymine does it have?

Back

27.2% Thymine.

Front

What is the complementary base pair for Adenine?

Back

Thymine (T) is the complementary base pair for Adenine (A).

Front

What is the complementary base pair for Cytosine?

Back

Guanine (G) is the complementary base pair for Cytosine (C).

Front

How do you calculate the percentage of Cytosine if Thymine is 32%?

Back

Since A = T, if T is 32%, then A is also 32%. The remaining percentage (100% - 64%) is divided equally between C and G, so C = G = 18%.

Front

What is the significance of Chargaff's findings in molecular biology?

Back

Chargaff's findings were crucial in understanding the structure of DNA and led to the discovery of the double helix structure.