Chargaff's Rule

If a strand of DNA has 20% C, what percent will be G?

If a strand of DNA has 35% A, what percent will be T?

If a strand of DNA has 10% G, what percent will be T?

If a strand of DNA has 24% T, what percent will be G?

G always goes with____

(click on the letter in the picture)

Which nitrogenous base pairs with adenine (A) in DNA molecules?

• Adenine (A)

• Thymine (T)

• Cytosine (C)

• Guanine (G)

Which nitrogenous base pairs with cytosine (C) in DNA molecules?

• Adenine (A)

• Thymine (T)

• Cytosine (C)

• Guanine (G)

Write the complimentary base pairs for the following DNA strand (Remember to use capital letters!): CAA

Write the complimentary base pairs for the following DNA strand (Remember to use capital letters!): TCG

Write the complimentary base pairs for the following DNA strand (Remember to use capital letters!): GAG